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Step 5 Preview
GPT-5.2 Chat
GPT-5.2 Chat is a proprietary model from OpenAI, released Dec 10, 2025. It ranks #78 of 351 on the LMArena text leaderboard with a rating of 1439. It costs $1.75 per million input tokens and $14 per million output tokens, with a 125K-token context window.
- Developer
- OpenAI
- Released
- Dec 10, 2025
- Context window
- 125K
- Price in / out, per 1M tokens
- $1.75 / $14
- Weights
- Proprietary
- Inputs
- Files, Images, Text
- Reasoning
- No
- Tool use
- Yes
The rating LMArena published at each update since Feb 16, 2026. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1439 | 78 / 351 | 36K |
| CodingLMArena | 1446 | 108 / 346 | 9.6K |
| MathLMArena | 1435 | 93 / 339 | 2.2K |
| Creative writingLMArena | 1401 | 100 / 349 | 5.6K |
| Instruction followingLMArena | 1417 | 94 / 351 | 11.8K |
| Hard promptsLMArena | 1445 | 85 / 351 | 22.8K |
| Multi-turnLMArena | 1458 | 50 / 349 | 6.8K |
| Long queriesLMArena | 1428 | 97 / 330 | 14K |
| ExpertLMArena | 1438 | 106 / 305 | 3.2K |
| Legal and governmentIndustries | 1437 | 98 / 325 | 2.7K |
| Medicine and healthcareIndustries | 1442 | 95 / 325 | 2.6K |
| Business and financeIndustries | 1433 | 73 / 344 | 7K |
| ChineseLanguages | 1460 | 111 / 328 | 2.4K |
| SpanishLanguages | 1433 | 97 / 249 | 1.2K |
| GermanLanguages | 1448 | 58 / 261 | 563 |
| FrenchLanguages | 1437 | 107 / 252 | 1K |
| JapaneseLanguages | 1418 | 54 / 236 | 267 |
| VisionLMArena | 1268 | 47 / 146 | 16.5K |
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-5.2 Chat
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-5.2 Chat?
GPT-5.2 Chat is made by OpenAI, founded 2015 and based in San Francisco.
How much does GPT-5.2 Chat cost?
$1.75 per million input tokens and $14 per million output tokens, at its provider’s list price.
What is GPT-5.2 Chat’s context window?
125K tokens (128,000).
How does GPT-5.2 Chat rank?
#78 of 351 on LMArena’s text leaderboard, rated 1439 (95% interval 1435–1443) from 35,982 votes, as of Oct 22, 2026.
Is GPT-5.2 Chat open source?
No. GPT-5.2 Chat is proprietary and served through its provider’s API.