Model comparison
Magistral Small vs Step 3.5 Flash
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 30.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AI
StepFunSummary
- The widest gap is in math, where Step 3.5 Flash leads 42.6 to 26.2.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.50 / $1.50 for Magistral Small.
- Step 3.5 Flash accepts more context: 256K tokens versus 128K.
Side by side
| Magistral Small | Step 3.5 Flash | |
|---|---|---|
| Provider | Mistral AI | StepFun |
| Noometry Index | 30.2 | 42.3 |
| Released | 2025-06-10 | 2026-01-29 |
| Weights | Open | Open |
| Context window | 128K | 256K |
| Max output | 40K | 256K |
| Input $ / M tokens | $0.50 | $0.10 |
| Output $ / M tokens | $1.50 | $0.30 |
| Results tracked | 10 | 19 |
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Category by category
Coding Step 3.5 Flash leads
Magistral Small: 38.4 (#176), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| SciCode | 35.2% | — |
| LMArena Coding | — | 1436 |
Reasoning Step 3.5 Flash leads
Magistral Small: 6.8 (#350), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| ARC-AGI-2 | 0% | — |
| Kagi LLM Benchmark | 6.3% | — |
| NYT Connections (extended) | — | 28.4% |
| ARC-AGI-1 | 5% | — |
| CritPt | 0.3% | — |
| Chess Puzzles | 3% | — |
| LMArena Hard Prompts | — | 1411 |
| DTBench | 61.3% | — |
| Epoch Capabilities Index | 133.19 | — |
Math Step 3.5 Flash leads
Magistral Small: 26.2 (#261), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 66.8% |
| OTIS Mock AIME 2024-2025 | 30% | — |
| LMArena Math | — | 1408 |
Knowledge Step 3.5 Flash leads
Magistral Small: 30.9 (#223), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| GPQA Diamond | 56.1% | — |
| LMArena Expert | — | 1421 |
Multilingual Not comparable
Magistral Small: —, Step 3.5 Flash: 50.5 (#119)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | — | 1385 |
| LMArena Chinese | — | 1447 |
| LMArena French | — | 1421 |
| LMArena German | — | 1405 |
| LMArena Japanese | — | 1354 |
| LMArena Korean | — | 1352 |
| LMArena Russian | — | 1385 |
| LMArena Spanish | — | 1419 |
Instruction Following Not comparable
Magistral Small: —, Step 3.5 Flash: 73.1 (#124)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | — | 1385 |
Long Context Not comparable
Magistral Small: —, Step 3.5 Flash: 42.8 (#117)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | — | 1402 |
Writing & Preference Not comparable
Magistral Small: —, Step 3.5 Flash: 58.8 (#113)
| Benchmark | Magistral Small | Step 3.5 Flash |
|---|---|---|
| LMArena Text | — | 1403 |
| LMArena Creative Writing | — | 1357 |
| LMArena Multi-Turn | — | 1405 |
Frequently asked questions
Is Magistral Small better than Step 3.5 Flash?
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 30.2 on the Noometry Index.
Which is cheaper, Magistral Small or Step 3.5 Flash?
Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Magistral Small lists at $0.50 and $1.50.
Is Magistral Small or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 38.4 in the Noometry coding category.
Which has the bigger context window?
Step 3.5 Flash does, with 256K tokens against 128K.
How many benchmarks do Magistral Small and Step 3.5 Flash share?
0 benchmarks have published results for both models. Magistral Small has 10 scored results on Noometry and Step 3.5 Flash has 19.