Model comparison
GPT-6 Luna vs Magistral Small
GPT-6 Luna is the stronger model overall, scoring 45.1 to 29.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AISummary
- The widest gap is in reasoning, where GPT-6 Luna leads 31.7 to 6.9.
- GPT-6 Luna is cheaper at $0.10 / $0.50 per million input/output tokens, against $0.50 / $1.50 for Magistral Small.
- GPT-6 Luna accepts more context: 1.05M tokens versus 128K.
- Magistral Small has downloadable open weights; the other is API-only.
Side by side
| GPT-6 Luna | Magistral Small | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 45.1 | 29.9 |
| Released | 2026-09-22 | 2025-06-10 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 128K |
| Max output | 128K | 40K |
| Input $ / M tokens | $0.10 | $0.50 |
| Output $ / M tokens | $0.50 | $1.50 |
| Results tracked | 18 | 10 |
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Category by category
Coding GPT-6 Luna leads
GPT-6 Luna: 54.7 (#24), Magistral Small: 37.8 (#172)
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| DeepSWE | 66.6% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1583 | — |
| SciCode | — | 35.2% |
| LMArena Coding | 1448 | — |
Reasoning GPT-6 Luna leads
GPT-6 Luna: 31.7 (#68), Magistral Small: 6.9 (#345)
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| ARC-AGI-2 | — | 0% |
| Kagi LLM Benchmark | — | 6.3% |
| NYT Connections (extended) | 68.7% | — |
| ARC-AGI-1 | — | 5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 3% |
| LMArena Hard Prompts | 1415 | — |
| DTBench | — | 61.3% |
| Epoch Capabilities Index | — | 133.19 |
Math GPT-6 Luna leads
GPT-6 Luna: 35.6 (#140), Magistral Small: 24.9 (#253)
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 30% |
| LMArena Math | 1396 | — |
Knowledge GPT-6 Luna leads
GPT-6 Luna: 40.1 (#110), Magistral Small: 30.9 (#215)
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| GPQA Diamond | — | 56.1% |
| LMArena Expert | 1458 | — |
Multimodal Not comparable
GPT-6 Luna: 42.0 (#27), Magistral Small: —
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| Furniture Assembly | 44.2% | — |
Multilingual Not comparable
GPT-6 Luna: 51.0 (#111), Magistral Small: —
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| LMArena Non-English | 1390 | — |
| LMArena Chinese | 1425 | — |
| LMArena Russian | 1392 | — |
| LMArena Spanish | 1416 | — |
Instruction Following Not comparable
GPT-6 Luna: 74.7 (#85), Magistral Small: —
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| LMArena Instruction Following | 1414 | — |
Long Context Not comparable
GPT-6 Luna: 43.3 (#95), Magistral Small: —
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| LMArena Longer Query | 1417 | — |
Writing & Preference Not comparable
GPT-6 Luna: 58.4 (#115), Magistral Small: —
| Benchmark | GPT-6 Luna | Magistral Small |
|---|---|---|
| LMArena Text | 1392 | — |
| LMArena Creative Writing | 1357 | — |
| LMArena Multi-Turn | 1400 | — |
Frequently asked questions
Is GPT-6 Luna better than Magistral Small?
GPT-6 Luna is the stronger model overall, scoring 45.1 to 29.9 on the Noometry Index.
Which is cheaper, GPT-6 Luna or Magistral Small?
GPT-6 Luna is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; Magistral Small lists at $0.50 and $1.50.
Is GPT-6 Luna or Magistral Small better for coding?
GPT-6 Luna scores higher on coding benchmarks: 54.7 versus 37.8 in the Noometry coding category.
Which has the bigger context window?
GPT-6 Luna does, with 1.05M tokens against 128K.
How many benchmarks do GPT-6 Luna and Magistral Small share?
0 benchmarks have published results for both models. GPT-6 Luna has 18 scored results on Noometry and Magistral Small has 10.