The meaningful difference
Claude emphasizes controllable reasoning; GPT-4.1 offers a much larger input window and lower listed token prices.
Choose by workload
Choose Claude 3.7 Sonnet when your priority is agentic code repair and deliberate multi-step work. Its relevant strengths include controllable extended thinking and strong software-engineering performance.
Choose GPT-4.1 when your priority is very large repositories and precise API instructions. Account for no open weights before committing.
Specification comparison
| Measure | Claude 3.7 Sonnet | GPT-4.1 |
|---|---|---|
| Access | API + app | API |
| License | Proprietary | Proprietary |
| Context | 200K | 1.0M |
| Provider-listed API input / 1M | $3.00 | $2.00 |
| Provider-listed API output / 1M | $15.00 | $8.00 |
| MMLU-Pro | 84.1 | 83.7 |
| GPQA Diamond | 84.8 | 66.3 |
| SWE-bench Verified | 70.3 | 54.6 |
| LiveCodeBench | 46.4 | 44.7 |
| SWE-Bench Pro | — | — |
| Artificial Analysis Intelligence Index | — | — |
A fair test for this pair
Ask both models to repair the same ten multi-file issues, then measure passing tests, unnecessary edits, latency, and reasoning-token cost.