# LFM2.5-2.6B vs Mistral Medium 3.5 128B

> Side-by-side benchmark comparison for LFM2.5-2.6B and Mistral Medium 3.5 128B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/lfm2-5-2-6b-vs-mistral-medium-3-5-128b
- Last updated: September 18, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: LFM2.5-2.6B and Mistral Medium 3.5 128B 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.
- LFM2.5-2.6B has the lower published output-token price.
- Mistral Medium 3.5 128B has the larger published context window at 256K.

## Model Snapshot

| Property | LFM2.5-2.6B | Mistral Medium 3.5 128B |
|----------|----------|----------|
| Creator | LiquidAI | Mistral |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | 39.9 | 42.56 |
| Benchmarks Covered | 7 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: 37.2 (Estimated · #131/154)
- Mistral Medium 3.5 128B public-lane score: 21.9 (Supported · #152/154)

| Benchmark | LFM2.5-2.6B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | 56.9% | Coming soon | Coming soon |
| τ³-bench results | 5.7% | 91.4% | Mistral Medium 3.5 128B |
| Claw-Eval | 62.9% | Coming soon | Coming soon |
| PinchBench | 68.2% | Coming soon | Coming soon |
| Gert Labs | Coming soon | 39.10% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 39.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: 39.2 (Estimated · #125/154)
- Mistral Medium 3.5 128B public-lane score: 39.2 (Estimated · #124/154)

| Benchmark | LFM2.5-2.6B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 59.4% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |
| SWE-bench (Vals) | Coming soon | 66.4% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 55.7 (Unranked · 1 rankable row)

### Reasoning

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: 24.9 (Unranked · 2 rankable rows)
- Mistral Medium 3.5 128B public-lane score: 68.6 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: 37 (Estimated · #151/184)
- Mistral Medium 3.5 128B public-lane score: 40.6 (Supported · #133/184)

| Benchmark | LFM2.5-2.6B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | Coming soon | 34.8% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 75.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: 38.1 (#104/124)
- Mistral Medium 3.5 128B public-lane score: 82.6 (#48/124)

| Benchmark | LFM2.5-2.6B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 59.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- LFM2.5-2.6B public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: Coming soon

| Benchmark | LFM2.5-2.6B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 51.9% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between LFM2.5-2.6B and Mistral Medium 3.5 128B?

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

- [LFM2.5-2.6B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-lfm2-5-2-6b)
- [Mistral Medium 3.5 128B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-mistral-medium-3-5-128b)
- [LFM2.5-2.6B vs GPT-6 Astra](/compare/gpt-6-astra-vs-lfm2-5-2-6b)
- [Mistral Medium 3.5 128B vs GPT-6 Astra](/compare/gpt-6-astra-vs-mistral-medium-3-5-128b)

## Explore More

- [LFM2.5-2.6B profile](/models/lfm2-5-2-6b)
- [Mistral Medium 3.5 128B profile](/models/mistral-medium-3-5-128b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)