# MiniMax M3.1 Flash vs Seed 2.1 Pro

> Side-by-side benchmark comparison for MiniMax M3.1 Flash and Seed 2.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/minimax-m3-1-flash-vs-seed-2-1-pro
- Last updated: October 19, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: MiniMax M3.1 Flash and Seed 2.1 Pro share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Seed 2.1 Pro has the lower published output-token price.
- MiniMax M3.1 Flash has the larger published context window at 1M.

## Model Snapshot

| Property | MiniMax M3.1 Flash | Seed 2.1 Pro |
|----------|----------|----------|
| Creator | MiniMax | ByteDance |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | 67.05 | null |
| Benchmarks Covered | 14 | 11 |
| Pricing (input/output) | $0.15 / $0.60 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- MiniMax M3.1 Flash public-lane score: 63.9 (Estimated · #19/130)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | MiniMax M3.1 Flash | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| LOCA-Bench 256K | 60.3 | Coming soon | Coming soon |
| SWE Refactor Bench | 23.0 | Coming soon | Coming soon |
| AutomationBench | 62.2% | Coming soon | Coming soon |
| BankerToolBench | 76.2% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 38.10% | Coming soon | Coming soon |
| Agents' Last Exam | 29.6% | Coming soon | Coming soon |
| OSWorld 2.0 | 61.7% | Coming soon | Coming soon |
| CyberGym | 82.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 71.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- MiniMax M3.1 Flash public-lane score: 61.3 (Supported · #17/151)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | MiniMax M3.1 Flash | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| PostTrainBench v1.1 | 39.3% | Coming soon | Coming soon |
| DeepSWE | 73.7% | Coming soon | Coming soon |
| NL2Repo | 61.2% | 47% | MiniMax M3.1 Flash |
| Terminal-Bench 2.1 | Coming soon | 71.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- MiniMax M3.1 Flash public-lane score: 80.6 (Unranked · 2 rankable rows)
- Seed 2.1 Pro public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- MiniMax M3.1 Flash public-lane score: 73.5 (#30/55)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | MiniMax M3.1 Flash | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| BabyVision w/ Python | 91.0% | Coming soon | Coming soon |
| CharXiv | 82.5% | 85.4% | Seed 2.1 Pro |
| MathVision | Coming soon | 92.6% | Coming soon |
| MMMU-Pro | Coming soon | 81.6% | Coming soon |
| ZeroBench | Coming soon | 18.0% | Coming soon |
| BabyVision | Coming soon | 73.7% | Coming soon |
| ERQA | Coming soon | 72.0% | Coming soon |
| Video-MME | Coming soon | 89.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- MiniMax M3.1 Flash public-lane score: 73.2 (Supported · #14/186)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | MiniMax M3.1 Flash | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| HLE w/o tools | 43.4% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 70.8% | Coming soon |

## FAQ

### Is there enough evidence to pick between MiniMax M3.1 Flash and Seed 2.1 Pro?

Not yet. The models share only 2 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

- [MiniMax M3.1 Flash vs MiniMax M3.1 Flash Preview](/compare/minimax-m3-1-flash-vs-minimax-m3-1-flash-preview)
- [Seed 2.1 Pro vs MiniMax M3.1 Flash Preview](/compare/minimax-m3-1-flash-preview-vs-seed-2-1-pro)
- [MiniMax M3.1 Flash vs Seed 2.1 Turbo](/compare/minimax-m3-1-flash-vs-seed-2-1-turbo)
- [Seed 2.1 Pro vs Seed 2.1 Turbo](/compare/seed-2-1-pro-vs-seed-2-1-turbo)

## Explore More

- [MiniMax M3.1 Flash profile](/models/minimax-m3-1-flash)
- [Seed 2.1 Pro profile](/models/seed-2-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)