Model comparison
GPT-5.4 Pro vs Magistral Small
GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 29.9 on the Noometry Index. Magistral Small costs 90× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.
Last verified . 6 shared benchmarks.
Mistral AISummary
- They share 6 benchmarks with published results for both. GPT-5.4 Pro scores higher in 4 categories and Magistral Small in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.4 Pro leads 71.0 to 6.9.
- The biggest single-benchmark swing is ARC-AGI-1: 94.5% for GPT-5.4 Pro and 5% for Magistral Small.
- Magistral Small is cheaper at $0.50 / $1.50 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 128K.
- Magistral Small has downloadable open weights; the other is API-only.
Side by side
| GPT-5.4 Pro | Magistral Small | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 58.8 | 29.9 |
| Released | 2026-03-05 | 2025-06-10 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 128K |
| Max output | 128K | 40K |
| Input $ / M tokens | $30 | $0.50 |
| Output $ / M tokens | $180 | $1.50 |
| Results tracked | 16 | 10 |
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Category by category
Coding GPT-5.4 Pro leads
GPT-5.4 Pro: 42.6 (#89), Magistral Small: 37.8 (#172)
Reasoning GPT-5.4 Pro leads
GPT-5.4 Pro: 71.0 (#10), Magistral Small: 6.9 (#345)
| Benchmark | GPT-5.4 Pro | Magistral Small |
|---|---|---|
| ARC-AGI-2 | 83.3% | 0% |
| ARC-AGI-1 | 94.5% | 5% |
| CritPt | 30% | 0.3% |
| Chess Puzzles | 58.6% | 3% |
| Epoch Capabilities Index | 159.12 | 133.19 |
| SimpleBench | 74.1% | — |
| Kagi LLM Benchmark | — | 6.3% |
| EnigmaEval | 23.8% | — |
| DTBench | — | 61.3% |
Math GPT-5.4 Pro leads
GPT-5.4 Pro: 72.0 (#17), Magistral Small: 24.9 (#253)
| Benchmark | GPT-5.4 Pro | Magistral Small |
|---|---|---|
| FrontierMath (Tiers 1-3) | 82.5% | — |
| FrontierMath Tier 4 | 58.5% | — |
| OTIS Mock AIME 2024-2025 | — | 30% |
| FrontierMath (Feb 2025 set) | 50% | — |
| FrontierMath Tier 4 (v1) | 37.5% | — |
Knowledge GPT-5.4 Pro leads
GPT-5.4 Pro: 68.3 (#6), Magistral Small: 30.9 (#215)
| Benchmark | GPT-5.4 Pro | Magistral Small |
|---|---|---|
| GPQA Diamond | 94.6% | 56.1% |
| Humanity's Last Exam | 44.3% | — |
| SimpleQA Verified | 46.3% | — |
| Vectara Hallucination Rate | 8.3% | — |
Frequently asked questions
Is GPT-5.4 Pro better than Magistral Small?
GPT-5.4 Pro is the stronger model overall, scoring 58.8 to 29.9 on the Noometry Index. Magistral Small costs 90× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 Pro or Magistral Small?
Magistral Small is cheaper. It lists at $0.50 per million input tokens and $1.50 per million output tokens; GPT-5.4 Pro lists at $30 and $180.
Is GPT-5.4 Pro or Magistral Small better for coding?
GPT-5.4 Pro scores higher on coding benchmarks: 42.6 versus 37.8 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 Pro does, with 1.05M tokens against 128K.
How many benchmarks do GPT-5.4 Pro and Magistral Small share?
6 benchmarks have published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Magistral Small has 10.