OpenAI: GPT-5.1-Codex-Mini vs StepFun: Step 3.7 Flash
StepFun: Step 3.7 Flash wins on more metrics (4 of 7), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.1-Codex-Mini | StepFun: Step 3.7 Flash |
|---|---|---|
| Intelligence Index | 30.6✓ | 30.3 |
| Coding Index | — | 39.6✓ |
| GPQA Diamond | 81%✓ | 81% |
| Design Arena Elo | 1135 | 1212✓ |
| Speed (tokens/sec) | — | — |
| Latency | — | — |
| Input price /M | $0.250 | $0.200✓ |
| Output price /M | $2.00 | $1.15✓ |
| Context window | 400K✓ | 262K |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |
Frequently asked
Is OpenAI: GPT-5.1-Codex-Mini better than StepFun: Step 3.7 Flash?
StepFun: Step 3.7 Flash wins on more metrics (4 of 7), but the right pick depends on what you optimize for — see the breakdown below.
What are the biggest differences between OpenAI: GPT-5.1-Codex-Mini and StepFun: Step 3.7 Flash?
The table on this page compares OpenAI: GPT-5.1-Codex-Mini and StepFun: Step 3.7 Flash metric by metric — intelligence benchmarks, coding score, speed, latency, context window and per-token price — with the winner marked on each row. Data refreshes hourly.