GPT-4.1 Mini vs GPT-5.5
Head to head on 13 shared benchmarks, with price, context window, and release dates.
Benchmark scores
178evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.5 OpenAI | 68.4% | 90.0% | 1844elo | 51.7% | 76.8% | 13.7% | 46.1% | 88.6% | 68.8% | 47.3% | 75.0% | 49.2% | 69.3% | - | - | - | - | - | - | - | - | - | 86.2% | 54.2% | - | - | - | - | - | - | 12.9% | - | - | - | - | - | 36.2% | - | - | - | - | - | - | - | - | - | - | - | - | - | 86.0% | 100.0% | - | - | - | - | - | - | 1315elo | 78.2 | 34.0% | - | - | 51.8% | - | - | - | 5.7% | 44.8% | - | - | 24.9% | 1769elo | - | 15.1% | - | - | - | - | - | - | - | 51.8% | - | - | - | - | - | - | - | - | 2.1% | - | - | - | 84.7% | 82.5% | 81.1% | 73.0% | 87.7% | 96.3% | 87.7% | - | - | - | - | - | - | - | - | 92.8% | - | - | - | 49.1% | - | 86.9% | - | - | - | - | - | - | - | - | - | - | - | - | - | 78.7% | - | - | 45.3% | 100.0% | 50.0% | - | - | - | - | - | 51.5% | - | - | - | - | - | - | - | - | 4.2 | - | - | - | - | - | 58.6% | - | - | 75.7% | 83.4% | - | - | - | - | - | - | - | 57.4% | 68.1% | - | - | 69.8% | - | - | - | - | - | 61.9% |
| GPT-4.1 Mini OpenAI | 57.9% | 17.4% | 1144elo | 4.5% | 66.4% | 5.0% | 38.3% | 78.1% | 65.5% | 40.4% | 71.9% | 7.6% | 52.9% | -0.17 | 60.0% | 100.0% | 0.0% | 3 | 32.4% | 43.0% | 46.3% | 98.2% | - | - | 0.0% | 28.2% | -1 | 1.07 | 62.3% | 89.9% | - | 100 | 83.62 | 0.79 | 0.0% | -0.04 | - | 0.0% | 0.0% | 1.11 | 1.11 | 1.01 | 204.5 | 40.0% | 41.7% | 1.45 | 34.5% | 13.0% | 53.6% | 3.6% | - | - | 3.3% | 9.0% | 80.0% | 80.0% | 83.4% | 48.6% | - | - | - | 43.3% | 100.0% | - | 58.2% | 52.9% | 0.0% | - | - | 1.5% | 18.7% | - | - | 50.0% | - | 65.0% | 56.8% | 0.0% | 100.0% | 3.47 | 3.47 | 1.55 | - | 100.0% | 63.3% | 0.0% | 0.0% | 67.5% | 40.2% | 83.5% | 6.7% | - | 62.4% | 43.8% | 26.7% | - | - | - | - | - | - | - | 48.3% | 45.4% | 80.0% | 0.35 | 100.0% | 93.3% | 100.0% | 92.5% | - | 2.61 | 0.0% | 100.0% | - | 77.9% | - | 5 | 0.0% | 64.0% | 64.0% | 20.0% | 26.7% | 54.5% | 20.0% | 20.0% | 30.0% | 19.5% | 96.5% | 52.0% | - | 30.0% | 30.0% | - | - | - | 60.0% | 0.0% | 46.8% | 93.0% | 40.6% | - | 100.0% | 88.2% | 100.0% | 20.0% | 33.3% | 100.0% | 73.3% | 100.0% | - | 1.14 | 56.72 | 0 | 10.0% | 23.9% | - | 100.0% | 100.0% | - | - | 0.0% | 100.0% | 37.6% | 1.04 | 100.0% | 100.0% | 45.6% | - | - | 93.3% | 100.0% | - | 29.0% | 90.0% | 29.0% | 82.0% | 82.0% | 50.8% |
2 / 2 models
| Attribute | GPT-4.1 Mini OpenAI | GPT-5.5 OpenAI |
|---|---|---|
| Description | GPT-4.1 Mini is an AI model from OpenAI. | GPT-5.5 is an AI model from OpenAI. |
| Family | GPT | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 14 Apr 2025 | 23 Apr 2026 |
| Context | 1,047,576 | 1,050,000 |
| Input $/1M | $0.40 | $5.00 |
| Output $/1M | $1.60 | $30.00 |
| Cache read $/1M | $0.100 | $0.500 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | image, text, file | file, image, text |
| Providers | - | - |
| Publisher | OpenAI | OpenAI |
| Reported scores | GPQA Diamond76.8% (AA) Humanity's Last Exam (HLE)13.7% (AA) IFBench46.1% (AA) SciCode47.3% (AA) τ²-bench (Tau²-bench)69.3% (AA) |
FAQ
- Is GPT-4.1 Mini or GPT-5.5 better?
- Across the 13 benchmarks both models report on Sophon, GPT-5.5 leads on 13 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-4.1 Mini and GPT-5.5 compare on GPQA Diamond?
- GPT-4.1 Mini scores 66.4% and GPT-5.5 scores 76.8% on GPQA Diamond.
- Which is cheaper, GPT-4.1 Mini or GPT-5.5?
- GPT-4.1 Mini is cheaper at $1.60 per million output tokens against $30.00 for GPT-5.5 - about 18.8x.
- When were GPT-4.1 Mini and GPT-5.5 released?
- GPT-4.1 Mini was released 14 Apr 2025 by OpenAI. GPT-5.5 was released 23 Apr 2026 by OpenAI.
Comparing something else? Build your own side-by-side.