# Mistral Small 3.1 vs Seed 2.1 Turbo

> Side-by-side benchmark comparison for Mistral Small 3.1 and Seed 2.1 Turbo across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mistral-small-3-1-vs-seed-2-1-turbo
- Last updated: October 14, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Mistral Small 3.1 and Seed 2.1 Turbo share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Seed 2.1 Turbo has the larger published context window at 256K.

## Model Snapshot

| Property | Mistral Small 3.1 | Seed 2.1 Turbo |
|----------|----------|----------|
| Creator | Mistral | ByteDance |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 7 | 11 |
| Pricing (input/output) | N/A | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Mistral Small 3.1 public-lane score: Coming soon
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Mistral Small 3.1 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Mistral Small 3.1 public-lane score: Coming soon
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Mistral Small 3.1 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |
| NL2Repo | Coming soon | 43.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Mistral Small 3.1 public-lane score: 18.8 (Unranked · 2 rankable rows)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Mistral Small 3.1 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 64.0% | Coming soon | Coming soon |
| MMMU-Pro | 49.3% | 80.1% | Seed 2.1 Turbo |
| MathVision | Coming soon | 90.1% | Coming soon |
| ZeroBench | Coming soon | 11.0% | Coming soon |
| BabyVision | Coming soon | 62.9% | Coming soon |
| CharXiv | Coming soon | 82.5% | Coming soon |
| ERQA | Coming soon | 71.3% | Coming soon |
| Video-MME | Coming soon | 89.0% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Mistral Small 3.1 public-lane score: Coming soon
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Mistral Small 3.1 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 80.6% | Coming soon | Coming soon |
| MMLU-Pro | 66.8% | Coming soon | Coming soon |
| GPQA | 46.0% | Coming soon | Coming soon |
| SimpleQA | 10.4% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 67.4% | Coming soon |

## FAQ

### Is there enough evidence to pick between Mistral Small 3.1 and Seed 2.1 Turbo?

Not yet. The models share only 1 sourced benchmark row, 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

- [Mistral Small 3.1 vs Seed 2.1 Pro](/compare/mistral-small-3-1-vs-seed-2-1-pro)
- [Seed 2.1 Turbo vs Seed 2.1 Pro](/compare/seed-2-1-pro-vs-seed-2-1-turbo)
- [Mistral Small 3.1 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mistral-small-3-1)
- [Seed 2.1 Turbo vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-seed-2-1-turbo)

## Explore More

- [Mistral Small 3.1 profile](/models/mistral-small-3-1)
- [Seed 2.1 Turbo profile](/models/seed-2-1-turbo)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)