GPT-5.1
- Context
- 400K
- 128K max output
- Input price
- $1.25
- per 1M tokens · OpenAI API
- Output price
- $10.00
- per 1M tokens
- Epoch Capabilities Index
- 149.7
- #44 of 71 listed
- LMArena Text
- 1,456
- #40 of 79 listed
Where to run it
3 offerings · prices as listed| Meter | Tier | Price |
|---|---|---|
| Input | Standard | $1.25 / 1M tokens |
| Batch | $0.63 / 1M tokens | |
| Flex tier | $0.63 / 1M tokens | |
| Fast tier | $2.50 / 1M tokens | |
| Output | Standard | $10.00 / 1M tokens |
| Batch | $5.00 / 1M tokens | |
| Flex tier | $5.00 / 1M tokens | |
| Fast tier | $20.00 / 1M tokens | |
| Cache read | Standard | $0.13 / 1M tokens |
| Batch | $0.063 / 1M tokens | |
| Flex tier | $0.063 / 1M tokens | |
| Fast tier | $0.25 / 1M tokens | |
| Input | Standard | $1.25 / 1M tokens |
| Priority tier | $2.50 / 1M tokens | |
| Output | Standard | $10.00 / 1M tokens |
| Priority tier | $20.00 / 1M tokens | |
| Cache read | Standard | $0.13 / 1M tokens |
| Priority tier | $0.25 / 1M tokens | |
| Input | Standard | $1.38 / 1M tokens |
| Priority tier | $2.75 / 1M tokens | |
| Output | Standard | $11.00 / 1M tokens |
| Priority tier | $22.00 / 1M tokens | |
| Cache read | Standard | $0.14 / 1M tokens |
| Priority tier | $0.28 / 1M tokens | |
Cited scores
From third-party leaderboards, not measured by us- Epoch Capabilities Index 149.7
#44 of 71 listed models · CI 148.2–151
Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Sep 26, 2026 · changes we made
- LMArena Text 1,456
#40 of 79 listed models · high effort · CI 1,452–1,459 · 41,596 votes
Also listed: gpt-5.1 1,439
LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Sep 25, 2026 · changes we made
- Epoch AI · GPQA Diamond 87.6%
#38 of 64 listed models · high effort · ±1.88
Also listed: medium effort 85% · reasoning off 66.7%
Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Sep 26, 2026 · changes we made
- Epoch AI · SWE-bench Verified 68%
#20 of 23 listed models · high effort · ±2.12
Also listed: high effort, run started 2026-02-17 65.9%
Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Sep 26, 2026 · changes we made
- LMArena Text · Chinese 1,498
#37 of 79 listed models · high effort · CI 1,487–1,508 · 3,431 votes
Also listed: gpt-5.1 1,471
LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Sep 25, 2026 · changes we made
- LMArena Text · Coding 1,492
#47 of 79 listed models · high effort · CI 1,485–1,499 · 8,416 votes
Also listed: gpt-5.1 1,476
LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Sep 25, 2026 · changes we made
- LMArena Vision 1,248
#34 of 49 listed models · high effort · CI 1,240–1,256 · 9,336 votes
Also listed: gpt-5.1 1,235
LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Sep 13, 2026 · changes we made