Model comparison
Laguna M.1 vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 32.5 on the Noometry Index.
Last verified . 2 shared benchmarks.
Poolside
StepFunSummary
- They share 2 benchmarks with published results for both. Laguna M.1 scores higher in 0 categories and Step 5 Preview in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 5 Preview leads 46.1 to 21.1.
- The biggest single-benchmark swing is ProofBench: 0% for Laguna M.1 and 42% for Step 5 Preview.
- Step 5 Preview accepts more context: 1.02M tokens versus 262K.
- Laguna M.1 has downloadable open weights; the other is API-only.
Side by side
| Laguna M.1 | Step 5 Preview | |
|---|---|---|
| Provider | Poolside | StepFun |
| Noometry Index | 32.5 | 47.9 |
| Released | 2026-04-28 | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | 262K | 1.02M |
| Max output | 33K | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 3 | 18 |
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Category by category
Coding Step 5 Preview leads
Laguna M.1: 36.6 (#204), Step 5 Preview: 51.8 (#36)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena WebDev | 1349 | 1564 |
| SciCode | — | 58.9% |
| LMArena Coding | — | 1480 |
Reasoning Step 5 Preview leads
Laguna M.1: 23.1 (#184), Step 5 Preview: 40.0 (#57)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LMArena Hard Prompts | — | 1465 |
| Surface Evolver Bench | 15.6% | — |
Math Step 5 Preview leads
Laguna M.1: 21.1 (#283), Step 5 Preview: 46.1 (#72)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| ProofBench | 0% | 42% |
| LMArena Math | — | 1470 |
Knowledge Not comparable
Laguna M.1: —, Step 5 Preview: 41.2 (#112)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Expert | — | 1470 |
Multimodal Not comparable
Laguna M.1: —, Step 5 Preview: 41.0 (#41)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Not comparable
Laguna M.1: —, Step 5 Preview: 53.8 (#54)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Non-English | — | 1432 |
| LMArena Chinese | — | 1519 |
| LMArena Russian | — | 1436 |
| LMArena Spanish | — | 1439 |
Instruction Following Not comparable
Laguna M.1: —, Step 5 Preview: 76.0 (#50)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | — | 1444 |
Long Context Not comparable
Laguna M.1: —, Step 5 Preview: 44.5 (#64)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | — | 1455 |
Writing & Preference Not comparable
Laguna M.1: —, Step 5 Preview: 62.8 (#71)
| Benchmark | Laguna M.1 | Step 5 Preview |
|---|---|---|
| LMArena Text | — | 1442 |
| LMArena Creative Writing | — | 1410 |
| LMArena Multi-Turn | — | 1447 |
Frequently asked questions
Is Laguna M.1 better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 32.5 on the Noometry Index.
Is Laguna M.1 or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 36.6 in the Noometry coding category.
Which has the bigger context window?
Step 5 Preview does, with 1.02M tokens against 262K.
How many benchmarks do Laguna M.1 and Step 5 Preview share?
2 benchmarks have published results for both models. Laguna M.1 has 3 scored results on Noometry and Step 5 Preview has 18.