Model comparison
GPT-5.5 Pro vs Ministral 3B
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 25.6 on the Noometry Index. Ministral 3B costs 1688× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Last verified . 4 shared benchmarks.
Mistral AISummary
- They share 4 benchmarks with published results for both. GPT-5.5 Pro scores higher in 3 categories and Ministral 3B in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.5 Pro leads 83.8 to 24.5.
- The biggest single-benchmark swing is GPQA Diamond: 93.9% for GPT-5.5 Pro and 25.3% for Ministral 3B.
- Ministral 3B is cheaper at $0.04 / $0.04 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 128K.
- Ministral 3B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.5 Pro | Ministral 3B | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 64.3 | 25.6 |
| Released | 2026-04-23 | 2024-10-01 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 128K |
| Max output | 128K | 128K |
| Input $ / M tokens | $30 | $0.04 |
| Output $ / M tokens | $180 | $0.04 |
| Results tracked | 14 | 6 |
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Category by category
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.6 (#7), Ministral 3B: 17.7 (#278)
| Benchmark | GPT-5.5 Pro | Ministral 3B |
|---|---|---|
| DTBench | 96% | 51.7% |
| LMCA | 53.9% | 5.5% |
| Epoch Capabilities Index | 162.45 | 118.08 |
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
Math GPT-5.5 Pro leads
GPT-5.5 Pro: 83.8 (#8), Ministral 3B: 24.5 (#257)
| Benchmark | GPT-5.5 Pro | Ministral 3B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| MATH Level 5 | — | 14.4% |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
Knowledge GPT-5.5 Pro leads
GPT-5.5 Pro: 64.2 (#17), Ministral 3B: 10.4 (#297)
| Benchmark | GPT-5.5 Pro | Ministral 3B |
|---|---|---|
| GPQA Diamond | 93.9% | 25.3% |
| Vectara Hallucination Rate | — | 7.3% |
Frequently asked questions
Is GPT-5.5 Pro better than Ministral 3B?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 25.6 on the Noometry Index. Ministral 3B costs 1688× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5.5 Pro or Ministral 3B?
Ministral 3B is cheaper. It lists at $0.04 per million input tokens and $0.04 per million output tokens; GPT-5.5 Pro lists at $30 and $180.
Which has the bigger context window?
GPT-5.5 Pro does, with 1.05M tokens against 128K.
How many benchmarks do GPT-5.5 Pro and Ministral 3B share?
4 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Ministral 3B has 6.