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Step 5 Preview
GPT-6.1 Sol
GPT-6.1 Sol is a proprietary model from OpenAI, released Sep 29, 2026. It ranks #66 of 351 on the LMArena text leaderboard with a rating of 1444, and #7 of 27 on the Vals Index with 63.94%. It costs $2 per million input tokens and $10 per million output tokens, with a 1.1M-token context window.
- Developer
- OpenAI
- Released
- Sep 29, 2026
- Context window
- 1.1M
- Price in / out, per 1M tokens
- $2 / $10
- Weights
- Proprietary
- Inputs
- Files, Images, Text
- Reasoning
- Yes
- Tool use
- Yes
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| Vals IndexVals AI | 63.94% | 7 / 27 | $3.61 | |
| Terminal-Bench 4.0Coding | 55.05% | 8 / 55 | $1.72 | |
| Vibe Code BenchCoding | 88.93% | 8 / 115 | $6.23 | |
| Code MigrationCoding | 77.32% | 4 / 28 | $9.51 | |
| Finance AgentFinance | 61.82% | 13 / 31 | $1.63 | |
| Finance IndexFinance | 55.81% | 21 / 31 | $1.36 | |
| Tax Agent BenchFinance | 21.75% | 46 / 76 | $1.32 | |
| Legal IndexLaw | 68.72% | 17 / 28 | $2.75 | |
| Legal Research BenchLaw | 38.46% | 38 / 85 | $3.38 | |
| MedCodeMedicine | 48.84% | 28 / 107 | $2 / $10 | |
| Terminal-Bench ScienceReasoning | 52.86% | 2 / 42 | $3.44 |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1444 | 66 / 351 | 8.3K |
| CodingLMArena | 1482 | 54 / 346 | 1.6K |
| MathLMArena | 1490 | 21 / 339 | 448 |
| Creative writingLMArena | 1424 | 65 / 349 | 1.9K |
| Instruction followingLMArena | 1467 | 32 / 351 | 2.5K |
| Hard promptsLMArena | 1465 | 49 / 351 | 4.8K |
| Multi-turnLMArena | 1446 | 73 / 349 | 1.1K |
| Long queriesLMArena | 1461 | 51 / 330 | 3.4K |
| ExpertLMArena | 1489 | 39 / 305 | 759 |
| Legal and governmentIndustries | 1467 | 44 / 325 | 696 |
| Medicine and healthcareIndustries | 1429 | 118 / 325 | 596 |
| Business and financeIndustries | 1448 | 46 / 344 | 1.3K |
| ChineseLanguages | 1484 | 71 / 328 | 756 |
| SpanishLanguages | 1445 | 74 / 249 | 286 |
| FrenchLanguages | 1461 | 62 / 252 | 342 |
| WebDevLMArena | 1749 | 4 / 124 | 3.5K |
| VisionLMArena | 1288 | 29 / 146 | 2.3K |
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-6.1 Sol
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-6.1 Sol?
GPT-6.1 Sol is made by OpenAI, founded 2015 and based in San Francisco.
How much does GPT-6.1 Sol cost?
$2 per million input tokens and $10 per million output tokens, at its provider’s list price.
What is GPT-6.1 Sol’s context window?
1.1M tokens (1,050,000).
How does GPT-6.1 Sol rank?
#66 of 351 on LMArena’s text leaderboard, rated 1444 (95% interval 1437–1451) from 8,305 votes, as of Oct 22, 2026.
Is GPT-6.1 Sol open source?
No. GPT-6.1 Sol is proprietary and served through its provider’s API.