OpenAIGPT-5.1-Codex-mini
Best configuration ranks #225 of 610 on the BenchLeader Index at 53.4 ±7.6. Last measured 8 Sept 2026. Released 12 Nov 2025.
- Blended price
- $0.688/M
- $0.250 in · $2.00 out
- Output speed
- 35 tok/s
- First answer
- 6.52 s
- Context
- 400k
- Overall index53
- Coding29
- Agents & tools63
- Knowledge56
- Instruction following66
- Multimodal53
- Long context60
- Composite55
Benchmark results
One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Reasoning
| Benchmark | default | Source | Trend |
|---|---|---|---|
| GPQA Diamond (AA)not in index | 81.3%#175 | Artificial Analysis | |
| Humanity's Last Exam (AA)not in index | 18.5%#173 | Artificial Analysis |
Coding
| Benchmark | default | Source | Trend |
|---|---|---|---|
| LMArena WebDev | 1244#107 | LMArena |
Agents & tools
| Benchmark | default | Source | Trend |
|---|---|---|---|
| Terminal-Bench | 61.6%#13 | Terminal-Bench | |
| Terminal-Bench Hard | 33.3%#90 | Artificial Analysis | |
| τ²-Bench Telecom (AA)not in index | 62.9%#170 | Artificial Analysis |
Knowledge
| Benchmark | default | Source | Trend |
|---|---|---|---|
| AA-Omniscience | -16.4#168 | Artificial Analysis |
Instruction following
| Benchmark | default | Source | Trend |
|---|---|---|---|
| IFBench | 67.9%#82 | Artificial Analysis |
Multimodal
| Benchmark | default | Source | Trend |
|---|---|---|---|
| MMMU-Pro | 69.0%#127 | Artificial Analysis |
Long context
| Benchmark | default | Source | Trend |
|---|---|---|---|
| AA-LCR | 66.7%#186 | Artificial Analysis |
Composite
| Benchmark | default | Source | Trend |
|---|---|---|---|
| AA Intelligence Index | 20.4#170 | Artificial Analysis |
Where to run it
Every provider serving this model through OpenRouter, with throughput and first-token latency measured on live traffic over the last 30 minutes and each provider’s own price. Purple marks the best in each column.
| Provider | Speed | First token | Input $/M | Output $/M | Context | Quantisation |
|---|---|---|---|---|---|---|
| Azure | 35 tok/s | 6.52 s | $0.250 | $2.00 | 400k | – |
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache at $0.025 per 1M. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.0007 | $0.0006 | 15.1 s |
| Summarise a 30-page report | 12,000 / 600 | $0.0042 | $0.0022 | 23.7 s |
| Code edit | 6,000 / 1,500 | $0.0045 | $0.0035 | 49.4 s |
| Agentic coding session | 60,000 / 4,000 | $0.023 | $0.013 | 2.0 min |
| Structured extraction | 2,000 / 200 | $0.0009 | $0.0006 | 12.2 s |
See also
Data as of 9 Sept 2026. Compare with another model.