# Laguna S 2.1 vs Step 3.7 Flash

> Side-by-side benchmark comparison for Laguna S 2.1 and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/laguna-s-2-1-vs-step-3-7-flash
- Last updated: September 4, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Laguna S 2.1 and Step 3.7 Flash share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Laguna S 2.1 has the lower published output-token price.
- Laguna S 2.1 has the larger published context window at 1M.

## Model Snapshot

| Property | Laguna S 2.1 | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Poolside | StepFun |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | null | 53.19 |
| Benchmarks Covered | 6 | 11 |
| Pricing (input/output) | $0.10 / $0.20 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: 48.2 (Estimated · #77/151)
- Step 3.7 Flash public-lane score: 46.1 (Estimated · #87/151)

| Benchmark | Laguna S 2.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 70.2% | 59.5% | Laguna S 2.1 |
| Toolathlon-Verified | 49.7% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 75.8% | Coming soon |
| DeepSearchQA | Coming soon | 92.8% | Coming soon |
| Toolathlon | Coming soon | 49.5% | Coming soon |
| Claw-Eval | Coming soon | 67.1% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |
| Gert Labs | Coming soon | 51.57% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: 47.8 (Estimated · #87/183)
- Step 3.7 Flash public-lane score: 49.7 (Estimated · #75/183)

| Benchmark | Laguna S 2.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 70.2% | 59.5% | Laguna S 2.1 |
| SWE Multilingual | 78.5% | Coming soon | Coming soon |
| SWE-bench Pro | 59.4% | 56.3% | Laguna S 2.1 |
| deepSwe | 40.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 70.6 (Unranked · 3 rankable rows)

| Benchmark | Laguna S 2.1 | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SimpleVQA | Coming soon | 79.2% | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 71.1 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 50.3 (Estimated · #87/181)

### Instruction Following

- Winner: Insufficient shared evidence
- Laguna S 2.1 public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 81.8 (#51/120)

## FAQ

### Is there enough evidence to pick between Laguna S 2.1 and Step 3.7 Flash?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Laguna S 2.1 vs Laguna M.1](/compare/laguna-m-1-vs-laguna-s-2-1)
- [Step 3.7 Flash vs Laguna M.1](/compare/laguna-m-1-vs-step-3-7-flash)
- [Laguna S 2.1 vs Laguna XS.2](/compare/laguna-s-2-1-vs-laguna-xs-2)
- [Step 3.7 Flash vs Laguna XS.2](/compare/laguna-xs-2-vs-step-3-7-flash)

## Explore More

- [Laguna S 2.1 profile](/models/laguna-s-2-1)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)