models.md Codex Docs, 2026-04-30 18:36 UTC → 2026-05-14 21:00 UTC

2 2 

3## Recommended models3## Recommended models

4 4 

5![gpt-5.5](/images/api/models/gpt-5.5.jpg)5<div class="not-prose grid gap-6 md:grid-cols-2 xl:grid-cols-3">

6 6 <ModelDetails

7gpt-5.57 client:load

8 8 name="gpt-5.5"

9OpenAI's newest frontier model for complex coding, computer use, knowledge work, and research workflows in Codex.9 slug="gpt-5.5"

10 10 wallpaperUrl="/images/api/models/gpt-5.5.jpg"

11codex -m gpt-5.511 description="OpenAI's newest frontier model for complex coding, computer use, knowledge work, and research workflows in Codex."

12 12 data={{

13Copy command13 features: [

14 14 {

15Capability15 title: "Capability",

16 16 value: "",

17Speed17 icons: [

18 18 "openai.SparklesFilled",

19Codex CLI & SDK19 "openai.SparklesFilled",

20 20 "openai.SparklesFilled",

21Codex app & IDE extension21 "openai.SparklesFilled",

22 22 "openai.SparklesFilled",

23Codex Cloud23 ],

24 24 },

25ChatGPT Credits25 {

26 26 title: "Speed",

27API Access27 value: "",

28 28 icons: ["openai.Flash", "openai.Flash", "openai.Flash"],

29![gpt-5.4](/images/api/models/gpt-5.4.jpg)29 },

30 30 {

31gpt-5.431 title: "Codex CLI & SDK",

32 32 value: true,

33Flagship frontier model for professional work that brings the industry-leading coding capabilities of GPT-5.3-Codex together with stronger reasoning, tool use, and agentic workflows.33 },

34 34 { title: "Codex app & IDE extension", value: true },

35codex -m gpt-5.435 {

36 36 title: "Codex Cloud",

37Copy command37 value: false,

38 38 },

39Capability39 { title: "ChatGPT Credits", value: true },

40 40 { title: "API Access", value: true },

41Speed41 ],

42 42 }}

43Codex CLI & SDK43 />

44 44 

45Codex app & IDE extension45<ModelDetails

46 46 client:load

47Codex Cloud47 name="gpt-5.4"

48 48 slug="gpt-5.4"

49ChatGPT Credits49 wallpaperUrl="/images/api/models/gpt-5.4.jpg"

50 50 description="Flagship frontier model for professional work that brings the industry-leading coding capabilities of GPT-5.3-Codex together with stronger reasoning, tool use, and agentic workflows."

51API Access51 data={{

52 52 features: [

53![gpt-5.4-mini](/images/api/models/gpt-5-mini.jpg)53 {

54 54 title: "Capability",

55gpt-5.4-mini55 value: "",

56 56 icons: [

57Fast, efficient mini model for responsive coding tasks and subagents.57 "openai.SparklesFilled",

58 58 "openai.SparklesFilled",

59codex -m gpt-5.4-mini59 "openai.SparklesFilled",

60 60 "openai.SparklesFilled",

61Copy command61 "openai.SparklesFilled",

62 62 ],

63Capability63 },

64 64 {

65Speed65 title: "Speed",

66 66 value: "",

67Codex CLI & SDK67 icons: ["openai.Flash", "openai.Flash", "openai.Flash"],

68 68 },

69Codex app & IDE extension69 {

70 70 title: "Codex CLI & SDK",

71Codex Cloud71 value: true,

72 72 },

73ChatGPT Credits73 { title: "Codex app & IDE extension", value: true },

74 74 {

75API Access75 title: "Codex Cloud",

76 76 value: false,

77![gpt-5.3-codex](/images/codex/codex-wallpaper-1.webp)77 },

78 78 { title: "ChatGPT Credits", value: true },

79gpt-5.3-codex79 { title: "API Access", value: true },

80 80 ],

81Industry-leading coding model for complex software engineering. Its coding capabilities now also power GPT-5.4.81 }}

82 82/>

83codex -m gpt-5.3-codex83 

84 84<ModelDetails

85Copy command85 client:load

86 86 name="gpt-5.4-mini"

87Capability87 slug="gpt-5.4-mini"

88 88 wallpaperUrl="/images/api/models/gpt-5-mini.jpg"

89Speed89 description="Fast, efficient mini model for responsive coding tasks and subagents."

90 90 data={{

91Codex CLI & SDK91 features: [

92 92 {

93Codex app & IDE extension93 title: "Capability",

94 94 value: "",

95Codex Cloud95 icons: [

96 96 "openai.SparklesFilled",

97ChatGPT Credits97 "openai.SparklesFilled",

98 98 "openai.SparklesFilled",

99API Access99 ],

100 100 },

101![gpt-5.3-codex-spark](/images/codex/codex-wallpaper-2.webp)101 {

102 102 title: "Speed",

103gpt-5.3-codex-spark103 value: "",

104 104 icons: ["openai.Flash", "openai.Flash", "openai.Flash", "openai.Flash"],

105Text-only research preview model optimized for near-instant, real-time coding iteration. Available to ChatGPT Pro users.105 },

106 106 {

107codex -m gpt-5.3-codex-spark107 title: "Codex CLI & SDK",

108 108 value: true,

109Copy command109 },

110 110 { title: "Codex app & IDE extension", value: true },

111Capability111 {

112 112 title: "Codex Cloud",

113Speed113 value: false,

114 114 },

115Codex CLI & SDK115 { title: "ChatGPT Credits", value: true },

116 116 { title: "API Access", value: true },

117Codex app & IDE extension117 ],

118 118 }}

119Codex Cloud119/>

120 120 

121ChatGPT Credits121<ModelDetails

122 122 client:load

123API Access123 name="gpt-5.3-codex"

124 slug="gpt-5.3-codex"

125 wallpaperUrl="/images/codex/codex-wallpaper-1.webp"

126 description="Industry-leading coding model for complex software engineering. Its coding capabilities now also power GPT-5.4."

127 data={{

128 features: [

129 {

130 title: "Capability",

131 value: "",

132 icons: [

133 "openai.SparklesFilled",

134 "openai.SparklesFilled",

135 "openai.SparklesFilled",

136 "openai.SparklesFilled",

137 "openai.SparklesFilled",

138 ],

139 },

140 {

141 title: "Speed",

142 value: "",

143 icons: ["openai.Flash", "openai.Flash", "openai.Flash"],

144 },

145 {

146 title: "Codex CLI & SDK",

147 value: true,

148 },

149 { title: "Codex app & IDE extension", value: true },

150 {

151 title: "Codex Cloud",

152 value: true,

153 },

154 { title: "ChatGPT Credits", value: true },

155 { title: "API Access", value: true },

156 ],

157 }}

158/>

159 

160<ModelDetails

161 client:load

162 name="gpt-5.3-codex-spark"

163 slug="gpt-5.3-codex-spark"

164 wallpaperUrl="/images/codex/codex-wallpaper-2.webp"

165 description="Text-only research preview model optimized for near-instant, real-time coding iteration. Available to ChatGPT Pro users."

166 data={{

167 features: [

168 {

169 title: "Capability",

170 value: "",

171 icons: [

172 "openai.SparklesFilled",

173 "openai.SparklesFilled",

174 "openai.SparklesFilled",

175 ],

176 },

177 {

178 title: "Speed",

179 value: "",

180 icons: [

181 "openai.Flash",

182 "openai.Flash",

183 "openai.Flash",

184 "openai.Flash",

185 "openai.Flash",

186 ],

187 },

188 {

189 title: "Codex CLI & SDK",

190 value: true,

191 },

192 { title: "Codex app & IDE extension", value: true },

193 {

194 title: "Codex Cloud",

195 value: false,

196 },

197 { title: "ChatGPT Credits", value: false },

198 { title: "API Access", value: false },

199 ],

200 }}

201/>

202 

203</div>

124 204 

125For most tasks in Codex, start with `gpt-5.5` when it appears in your model205For most tasks in Codex, start with `gpt-5.5` when it appears in your model

126 picker. It is strongest for complex coding, computer use, knowledge work, and206 picker. It is strongest for complex coding, computer use, knowledge work, and

127 research workflows. GPT-5.5 is currently available in Codex when you sign in207 research workflows. GPT-5.5 is currently available in Codex when you sign in

128 with ChatGPT; it isn't available with API-key authentication. During the208 with ChatGPT or API-key authentication. Use `gpt-5.4-mini` when you want a

129 rollout, continue using `gpt-5.4` if `gpt-5.5` is not yet available. Use209 faster, lower-cost option for lighter coding tasks or subagents. The

130 `gpt-5.4-mini` when you want a faster, lower-cost option for lighter coding210 `gpt-5.3-codex-spark` model is available in research preview for ChatGPT Pro

131 tasks or subagents. The `gpt-5.3-codex-spark` model is available in research211 subscribers and is optimized for near-instant, real-time coding iteration.

132 preview for ChatGPT Pro subscribers and is optimized for near-instant,

133 real-time coding iteration.

134 212 

135## Alternative models213## Alternative models

136 214 

137![gpt-5.2](/images/api/models/gpt-5.2.jpg)215<div class="not-prose grid gap-4 md:grid-cols-2 xl:grid-cols-3">

138 216<ModelDetails

139gpt-5.2217 client:load

140 218 name="gpt-5.2"

141Previous general-purpose model for coding and agentic tasks, including hard debugging tasks that benefit from deeper deliberation.219 slug="gpt-5.2"

142 220 description="Previous general-purpose model for coding and agentic tasks, including hard debugging tasks that benefit from deeper deliberation."

143codex -m gpt-5.2221 collapsible

144 222 data={{

145Copy command223 features: [

146 224 {

147Show details225 title: "Capability",

226 value: "",

227 icons: [

228 "openai.SparklesFilled",

229 "openai.SparklesFilled",

230 "openai.SparklesFilled",

231 "openai.SparklesFilled",

232 ],

233 },

234 {

235 title: "Speed",

236 value: "",

237 icons: ["openai.Flash", "openai.Flash", "openai.Flash"],

238 },

239 {

240 title: "Codex CLI & SDK",

241 value: true,

242 },

243 { title: "Codex app & IDE extension", value: true },

244 {

245 title: "Codex Cloud",

246 value: false,

247 },

248 { title: "ChatGPT Credits", value: true },

249 { title: "API Access", value: true },

250 ],

251 }}

252/>

253 

254 </div>

148 255 

149## Other models256## Other models

150 257