OpenAI · Released Nov 13, 2025
GPT-5.1
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
- Top 23%VPCT
- Top 37%LMCA
- Top 38%SimpleQA Verified
- Top 40%Chess Puzzles
- Released
- Nov 13 2025
- Context window
- 400K 128K out
- Input / 1M tokens
- $1.25 from $0.63
- Output / 1M tokens
- $10.00 from $5.00
Where to run it
32 providers compared
Included in GitLab Duo. Cheapest: OpenAI at $0.63 / $5.00 per 1M input / output tokens — 75% less than the priciest option.
| Provider | Input | Output | Cache read | Context | Max output | Uptime | vs. best |
|---|---|---|---|---|---|---|---|
| GitLab Duosubscription plan | Plan | Plan | — | 400K | 128K | — | Plan |
| OpenAI | $0.63 | $5.00 | $0.063 | 400K | 128K | 100%24h | Cheapest |
| OpenCode | $1.07 | $8.50 | $0.11 | 400K | 128K | — | +70% |
| Poe | $1.14 | $9.09 | $0.11 | 400K | 128K | — | +82% |
| Jiekou.AI | $1.19 | $9.50 | $0.12 | 400K | 128K | — | +90% |
| OpenAI | $1.25 | $10.00 | $0.13 | 400K | 128K | 100%24h | +100% |
| Azure | $1.25 | $10.00 | $0.13 | 400K | 128K | 99.8%24h | +100% |
| Helicone | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| NanoGPT | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Cloudflare AI Gateway | $1.25 | $10.00 | $0.13 | 128K | 128K | — | +100% |
| Snowflake Cortex | $1.25 | $10.00 | $0.13 | 272K | 8K | — | +100% |
| Kilo Gateway | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| LLM Gateway | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Databricks | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Pioneer | $1.25 | $10.00 | $0.13 | 400K | 131K | — | +100% |
| AIHubMix | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| 302.AI | $1.25 | $10.00 | — | 400K | 128K | — | +100% |
| ZenMux | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Perplexity Agent | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Prime Inference | $1.25 | $10.00 | — | 400K | 128K | — | +100% |
| Neon | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Azure Cognitive Services | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Abacus | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| DevPass (LLM Gateway) | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Merge Gateway | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Ofox | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Impossibl | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| OrcaRouter | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| NEAR AI Cloud | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Eden AI | $1.25 | $10.00 | $0.13 | 400K | 128K | — | +100% |
| Cortecs | $1.38 | $10.96 | $0.16 | 400K | 128K | — | +119% |
| Azureswedencentral | $1.38 | $11.00 | $0.14 | 400K | 128K | 100%24h | +120% |
| Requesty | $1.38 | $11.00 | $0.14 | 400K | 128K | — | +120% |
| AI/ML API | $1.63 | $13.00 | $0.16 | 400K | 128K | — | +160% |
| OpenAIfast | $2.50 | $20.00 | $0.25 | 400K | 128K | — | +300% |
Value
Price vs. performance
GPT-5.1 Other OpenAI Other labs Value frontier · GPQA Diamond vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.
Benchmarks
18 benchmark scores
| Benchmark | Score | Rank | Leader |
|---|---|---|---|
| SWE-bench VerifiedSoftware engineering · Real GitHub issues fixed in Python repos | 68.0% | #22of 32 | Claude Opus 4.783.5% |
| Terminal-BenchSoftware engineering · Tasks completed with the programs in a real terminal (best agent) | 47.6% | #18of 40 | GPT-5.584.7% |
| GSOSoftware engineering · Optimize real code to make it significantly faster | 13.7% | #15of 27 | Claude Fable 5.188.2% |
| SciCodeSoftware engineering · Research-coding problems from the natural sciences | 43.3% | #68of 102 | Claude Opus 5.566.9% |
| Vending-Bench 2Agents & computer use · Run a simulated vending business for a year (final balance) | $1,473 | #45of 61 | GPT-6 Astra$15,515 |
| DeepResearch BenchWriting & content · Find and synthesize information from the web | 42.8% | #13of 21 | Claude Opus 4.655.3% |
| SimpleQA VerifiedWriting & content · Factual accuracy on 1,000 short questions | 48.0% | #30of 79 | Gemini 4 Argon76.0% |
| WebDev ArenaDesign & visual · People vote on which model builds the better website (Elo) | 1392 | #64of 90 | Claude Opus 5.51820 |
| VPCTDesign & visual · Read diagrams of balls rolling down ramps | 58.7% | #4of 18 | GPT-5.284.0% |
| GPQA DiamondReasoning & knowledge · PhD-level biology, chemistry and physics questions | 87.6% | #51of 122 | Gemini 4 Argon96.4% |
| Humanity's Last ExamReasoning & knowledge · Expert questions across 100+ subjects | 23.7% | #16of 32 | GPT-6 Astra54.8% |
| ARC-AGI-2Reasoning & knowledge · Few-shot abstract reasoning on grid puzzles | 17.6% | #47of 75 | GPT-6 Astra95.0% |
| ARC-AGI-1Reasoning & knowledge · Pattern induction from input–output examples | 72.8% | #45of 75 | Gemini 4 Argon98.5% |
| SimpleBenchReasoning & knowledge · Common-sense trick questions about space, time and people | 53.2% | #30of 58 | Claude Fable 581.9% |
| CritPtReasoning & knowledge · Open-ended, research-level physics problems | 4.9% | #58of 111 | GPT-5.6 Sol32.3% |
| Chess PuzzlesReasoning & knowledge · Find the single best move in 100 new puzzles | 42.0% | #33of 83 | GPT-6 Astra76.0% |
| LMCAReasoning & knowledge · Judge the quality of conceptual arguments like experts | 43.9% | #45of 123 | Claude Sonnet 5.568.3% |
| OTIS Mock AIMEMaths · Competition-style problems harder than MATH Level 5 | 88.6% | #54of 120 | Gemini 4 Argon100.0% |
Specs
Details
- Model ID
openai/gpt-5.1- Developer
- OpenAI
- Release date
- Nov 13, 2025 ·
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- API price
- $1.25 / $10.00 per 1M input / output tokens
- Providers
- 32
- Input types
- image, text, file
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- No
- Free tier
- No
Release date and prices from OpenRouter's catalog; providers from OpenRouter and models.dev. Buying directly from a provider can cost a little differently. Speed, latency and uptime are measured on OpenRouter only; uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.