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Gemma 4 31B
Step 5 Preview
GPT-5 mini
GPT-5 mini is a proprietary model from OpenAI, released Aug 7, 2025. It ranks #182 of 351 on the LMArena text leaderboard with a rating of 1373. It costs $0.25 per million input tokens and $2 per million output tokens, with a 400K-token context window.
- Developer
- OpenAI
- Released
- Aug 7, 2025
- Context window
- 400K
- Price in / out, per 1M tokens
- $0.25 / $2
- Weights
- Proprietary
- Inputs
- Text, Images, Files
- Reasoning
- Yes
- Tool use
- Yes
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| SWE-benchCoding | 60.80% | 74 / 85 | $0.05 | |
| Vibe Code BenchCoding | 14.17% | 92 / 115 | $0.25 | |
| LiveCodeBenchCoding | 86.61% | 21 / 143 | $0.25 / $2 | |
| MedCodeMedicine | 43.05% | 48 / 107 | $0.25 / $2 | |
| MedQAMedicine | 96.06% | 7 / 92 | $0.25 / $2 | |
| GPQA DiamondReasoning | 80.30% | 68 / 138 | $0.25 / $2 | |
| MMLU-ProReasoning | 82.23% | 80 / 138 | $0.25 / $2 | |
| AIMEReasoning | 91.46% | 24 / 96 | $0.25 / $2 | |
| MMMUReasoning | 78.91% | 50 / 93 | $0.25 / $2 |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1373 | 182 / 351 | 26.8K |
| CodingLMArena | 1406 | 170 / 346 | 5.5K |
| MathLMArena | 1378 | 185 / 339 | 1.5K |
| Creative writingLMArena | 1325 | 197 / 349 | 3.5K |
| Instruction followingLMArena | 1357 | 181 / 351 | 7K |
| Hard promptsLMArena | 1380 | 178 / 351 | 12.9K |
| Multi-turnLMArena | 1363 | 192 / 349 | 4.4K |
| Long queriesLMArena | 1355 | 194 / 330 | 5.9K |
| ExpertLMArena | 1379 | 175 / 305 | 1.2K |
| Legal and governmentIndustries | 1375 | 184 / 325 | 1.7K |
| Medicine and healthcareIndustries | 1380 | 183 / 325 | 1.4K |
| Business and financeIndustries | 1358 | 186 / 344 | 4.8K |
| ChineseLanguages | 1385 | 192 / 328 | 2K |
| SpanishLanguages | 1355 | 190 / 249 | 856 |
| GermanLanguages | 1366 | 159 / 261 | 592 |
| FrenchLanguages | 1386 | 167 / 252 | 414 |
| JapaneseLanguages | 1341 | 136 / 236 | 460 |
| VisionLMArena | 1202 | 93 / 146 | 28.9K |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare GPT-5 mini
OpenAI
The lab behind GPT and ChatGPT, which brought large language models to hundreds of millions of people. Founded 2015, based in San Francisco. openai.com
Questions
Who makes GPT-5 mini?
GPT-5 mini is made by OpenAI, founded 2015 and based in San Francisco.
How much does GPT-5 mini cost?
$0.25 per million input tokens and $2 per million output tokens, at its provider’s list price.
What is GPT-5 mini’s context window?
400K tokens (400,000).
How does GPT-5 mini rank?
#182 of 351 on LMArena’s text leaderboard, rated 1373 (95% interval 1369–1378) from 26,799 votes, as of Oct 22, 2026.
Is GPT-5 mini open source?
No. GPT-5 mini is proprietary and served through its provider’s API.