Reference 2026-04-15 05:55 UTC to 2026-04-23 05:56 UTC

796 796 

797 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).797 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

798 798 

799- `prompt_cache_retention: optional "in-memory" or "24h"`799- `prompt_cache_retention: optional "in_memory" or "24h"`

800 800 

801 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).801 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

802 802 

803 - `"in-memory"`803 - `"in_memory"`

804 804 

805 - `"24h"`805 - `"24h"`

806 806 

3166 3166 

3167 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).3167 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

3168 3168 

3169- `prompt_cache_retention: optional "in-memory" or "24h"`3169- `prompt_cache_retention: optional "in_memory" or "24h"`

3170 3170 

3171 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).3171 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

3172 3172 

3173 - `"in-memory"`3173 - `"in_memory"`

3174 3174 

3175 - `"24h"`3175 - `"24h"`

3176 3176 

10366 10366 

10367 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).10367 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

10368 10368 

10369 - `prompt_cache_retention: optional "in-memory" or "24h"`10369 - `prompt_cache_retention: optional "in_memory" or "24h"`

10370 10370 

10371 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).10371 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

10372 10372 

10373 - `"in-memory"`10373 - `"in_memory"`

10374 10374 

10375 - `"24h"`10375 - `"24h"`

10376 10376 

10738 "version": "version"10738 "version": "version"

10739 },10739 },

10740 "prompt_cache_key": "prompt-cache-key-1234",10740 "prompt_cache_key": "prompt-cache-key-1234",

10741 "prompt_cache_retention": "in-memory",10741 "prompt_cache_retention": "in_memory",

10742 "reasoning": {10742 "reasoning": {

10743 "effort": "none",10743 "effort": "none",

10744 "generate_summary": "auto",10744 "generate_summary": "auto",

17628 17628 

17629 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).17629 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

17630 17630 

17631 - `prompt_cache_retention: optional "in-memory" or "24h"`17631 - `prompt_cache_retention: optional "in_memory" or "24h"`

17632 17632 

17633 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).17633 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

17634 17634 

17635 - `"in-memory"`17635 - `"in_memory"`

17636 17636 

17637 - `"24h"`17637 - `"24h"`

17638 17638 

17991 "version": "version"17991 "version": "version"

17992 },17992 },

17993 "prompt_cache_key": "prompt-cache-key-1234",17993 "prompt_cache_key": "prompt-cache-key-1234",

17994 "prompt_cache_retention": "in-memory",17994 "prompt_cache_retention": "in_memory",

17995 "reasoning": {17995 "reasoning": {

17996 "effort": "none",17996 "effort": "none",

17997 "generate_summary": "auto",17997 "generate_summary": "auto",

24190 24190 

24191 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).24191 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

24192 24192 

24193 - `prompt_cache_retention: optional "in-memory" or "24h"`24193 - `prompt_cache_retention: optional "in_memory" or "24h"`

24194 24194 

24195 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).24195 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

24196 24196 

24197 - `"in-memory"`24197 - `"in_memory"`

24198 24198 

24199 - `"24h"`24199 - `"24h"`

24200 24200 

24554 "version": "version"24554 "version": "version"

24555 },24555 },

24556 "prompt_cache_key": "prompt-cache-key-1234",24556 "prompt_cache_key": "prompt-cache-key-1234",

24557 "prompt_cache_retention": "in-memory",24557 "prompt_cache_retention": "in_memory",

24558 "reasoning": {24558 "reasoning": {

24559 "effort": "none",24559 "effort": "none",

24560 "generate_summary": "auto",24560 "generate_summary": "auto",

40311 40311 

40312 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).40312 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

40313 40313 

40314 - `prompt_cache_retention: optional "in-memory" or "24h"`40314 - `prompt_cache_retention: optional "in_memory" or "24h"`

40315 40315 

40316 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).40316 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

40317 40317 

40318 - `"in-memory"`40318 - `"in_memory"`

40319 40319 

40320 - `"24h"`40320 - `"24h"`

40321 40321 

46829 46829 

46830 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).46830 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

46831 46831 

46832 - `prompt_cache_retention: optional "in-memory" or "24h"`46832 - `prompt_cache_retention: optional "in_memory" or "24h"`

46833 46833 

46834 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).46834 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

46835 46835 

46836 - `"in-memory"`46836 - `"in_memory"`

46837 46837 

46838 - `"24h"`46838 - `"24h"`

46839 46839 

53824 53824 

53825 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).53825 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

53826 53826 

53827 - `prompt_cache_retention: optional "in-memory" or "24h"`53827 - `prompt_cache_retention: optional "in_memory" or "24h"`

53828 53828 

53829 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).53829 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

53830 53830 

53831 - `"in-memory"`53831 - `"in_memory"`

53832 53832 

53833 - `"24h"`53833 - `"24h"`

53834 53834 

60286 60286 

60287 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).60287 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

60288 60288 

60289 - `prompt_cache_retention: optional "in-memory" or "24h"`60289 - `prompt_cache_retention: optional "in_memory" or "24h"`

60290 60290 

60291 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).60291 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

60292 60292 

60293 - `"in-memory"`60293 - `"in_memory"`

60294 60294 

60295 - `"24h"`60295 - `"24h"`

60296 60296 

67001 67001 

67002 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).67002 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

67003 67003 

67004 - `prompt_cache_retention: optional "in-memory" or "24h"`67004 - `prompt_cache_retention: optional "in_memory" or "24h"`

67005 67005 

67006 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).67006 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

67007 67007 

67008 - `"in-memory"`67008 - `"in_memory"`

67009 67009 

67010 - `"24h"`67010 - `"24h"`

67011 67011 

73359 73359 

73360 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).73360 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

73361 73361 

73362 - `prompt_cache_retention: optional "in-memory" or "24h"`73362 - `prompt_cache_retention: optional "in_memory" or "24h"`

73363 73363 

73364 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).73364 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

73365 73365 

73366 - `"in-memory"`73366 - `"in_memory"`

73367 73367 

73368 - `"24h"`73368 - `"24h"`

73369 73369 

88998 88998 

88999 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).88999 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

89000 89000 

89001 - `prompt_cache_retention: optional "in-memory" or "24h"`89001 - `prompt_cache_retention: optional "in_memory" or "24h"`

89002 89002 

89003 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).89003 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

89004 89004 

89005 - `"in-memory"`89005 - `"in_memory"`

89006 89006 

89007 - `"24h"`89007 - `"24h"`

89008 89008 

95807 95807 

95808 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).95808 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

95809 95809 

95810 - `prompt_cache_retention: optional "in-memory" or "24h"`95810 - `prompt_cache_retention: optional "in_memory" or "24h"`

95811 95811 

95812 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).95812 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

95813 95813 

95814 - `"in-memory"`95814 - `"in_memory"`

95815 95815 

95816 - `"24h"`95816 - `"24h"`

95817 95817 

100838 100838 

100839 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).100839 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

100840 100840 

100841 - `prompt_cache_retention: optional "in-memory" or "24h"`100841 - `prompt_cache_retention: optional "in_memory" or "24h"`

100842 100842 

100843 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).100843 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

100844 100844 

100845 - `"in-memory"`100845 - `"in_memory"`

100846 100846 

100847 - `"24h"`100847 - `"24h"`

100848 100848 

108230 108230 

108231 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).108231 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

108232 108232 

108233 - `prompt_cache_retention: optional "in-memory" or "24h"`108233 - `prompt_cache_retention: optional "in_memory" or "24h"`

108234 108234 

108235 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).108235 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

108236 108236 

108237 - `"in-memory"`108237 - `"in_memory"`

108238 108238 

108239 - `"24h"`108239 - `"24h"`

108240 108240 

6059 6059 

6060 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).6060 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

6061 6061 

6062 - `prompt_cache_retention: optional "in-memory" or "24h"`6062 - `prompt_cache_retention: optional "in_memory" or "24h"`

6063 6063 

6064 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).6064 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

6065 6065 

6066 - `"in-memory"`6066 - `"in_memory"`

6067 6067 

6068 - `"24h"`6068 - `"24h"`

6069 6069 

6423 "version": "version"6423 "version": "version"

6424 },6424 },

6425 "prompt_cache_key": "prompt-cache-key-1234",6425 "prompt_cache_key": "prompt-cache-key-1234",

6426 "prompt_cache_retention": "in-memory",6426 "prompt_cache_retention": "in_memory",

6427 "reasoning": {6427 "reasoning": {

6428 "effort": "none",6428 "effort": "none",

6429 "generate_summary": "auto",6429 "generate_summary": "auto",

3164 3164 

3165 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).3165 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

3166 3166 

3167- `prompt_cache_retention: optional "in-memory" or "24h"`3167- `prompt_cache_retention: optional "in_memory" or "24h"`

3168 3168 

3169 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).3169 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

3170 3170 

3171 - `"in-memory"`3171 - `"in_memory"`

3172 3172 

3173 - `"24h"`3173 - `"24h"`

3174 3174 

10364 10364 

10365 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).10365 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

10366 10366 

10367 - `prompt_cache_retention: optional "in-memory" or "24h"`10367 - `prompt_cache_retention: optional "in_memory" or "24h"`

10368 10368 

10369 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).10369 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

10370 10370 

10371 - `"in-memory"`10371 - `"in_memory"`

10372 10372 

10373 - `"24h"`10373 - `"24h"`

10374 10374 

10736 "version": "version"10736 "version": "version"

10737 },10737 },

10738 "prompt_cache_key": "prompt-cache-key-1234",10738 "prompt_cache_key": "prompt-cache-key-1234",

10739 "prompt_cache_retention": "in-memory",10739 "prompt_cache_retention": "in_memory",

10740 "reasoning": {10740 "reasoning": {

10741 "effort": "none",10741 "effort": "none",

10742 "generate_summary": "auto",10742 "generate_summary": "auto",

6103 6103 

6104 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).6104 Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching).

6105 6105 

6106 - `prompt_cache_retention: optional "in-memory" or "24h"`6106 - `prompt_cache_retention: optional "in_memory" or "24h"`

6107 6107 

6108 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).6108 The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention).

6109 6109 

6110 - `"in-memory"`6110 - `"in_memory"`

6111 6111 

6112 - `"24h"`6112 - `"24h"`

6113 6113 

6466 "version": "version"6466 "version": "version"

6467 },6467 },

6468 "prompt_cache_key": "prompt-cache-key-1234",6468 "prompt_cache_key": "prompt-cache-key-1234",

6469 "prompt_cache_retention": "in-memory",6469 "prompt_cache_retention": "in_memory",

6470 "reasoning": {6470 "reasoning": {

6471 "effort": "none",6471 "effort": "none",

6472 "generate_summary": "auto",6472 "generate_summary": "auto",