# Gemini 3.5 Flash-Lite vs Mistral Medium 3.5 128B

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

- Canonical page: https://benchlm.ai/compare/gemini-3-5-flash-lite-vs-mistral-medium-3-5-128b
- Last updated: September 4, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Gemini 3.5 Flash-Lite if you want the stronger benchmark profile. Mistral Medium 3.5 128B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.5 Flash-Lite leads overall 60.5 to 48.95.
- The clearest category separation is in multimodal & grounded, where the averages are 76.1 for Gemini 3.5 Flash-Lite and 55.4 for Mistral Medium 3.5 128B.
- The biggest single benchmark swing is GPQA Diamond (Vals) in Knowledge, with scores of 83.8% and 34.8%.
- Gemini 3.5 Flash-Lite is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3.5 Flash-Lite also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B |
|----------|----------|----------|
| Creator | Google | Mistral |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | 60.5 | 48.95 |
| Benchmarks Covered | 10 | 7 |
| Pricing (input/output) | $0.30 / $2.50 | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 43.4 (Estimated · #104/151)
- Mistral Medium 3.5 128B public-lane score: 27.5 (Supported · #141/151)

| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54% | Coming soon | Coming soon |
| OSWorld-Verified | 74% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 50.2% | 39.0% | Gemini 3.5 Flash-Lite |
| τ³-bench results | Coming soon | 91.4% | Coming soon |
| Gert Labs | Coming soon | 39.10% | Coming soon |

### Coding

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 43.6 (Supported · #121/183)
- Mistral Medium 3.5 128B public-lane score: 41.1 (Estimated · #136/183)

| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54.0% | Coming soon | Coming soon |
| SWE-bench Pro | 54.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 79.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 75.0% | 66.4% | Gemini 3.5 Flash-Lite |
| SWE-bench Verified | Coming soon | 77.6% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 76.1 (#16/48)
- Mistral Medium 3.5 128B public-lane score: 55.4 (Unranked · 1 rankable row)

### Reasoning

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 60.8 (Unranked · 3 rankable rows)
- Mistral Medium 3.5 128B public-lane score: 68 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 72.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Gemini 3.5 Flash-Lite
- Gemini 3.5 Flash-Lite public-lane score: 53 (Supported · #71/181)
- Mistral Medium 3.5 128B public-lane score: 42 (Supported · #131/181)

| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 83.8% | 34.8% | Gemini 3.5 Flash-Lite |
| MMLU-Pro (Vals) | 85.8% | 75.3% | Gemini 3.5 Flash-Lite |

### Instruction Following

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 83.7 (#47/120)

## FAQ

### Which is better overall, Gemini 3.5 Flash-Lite or Mistral Medium 3.5 128B?

Gemini 3.5 Flash-Lite is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.5 Flash-Lite and Mistral Medium 3.5 128B?

The widest category gap is in multimodal & grounded, where the averages are 76.1 for Gemini 3.5 Flash-Lite and 55.4 for Mistral Medium 3.5 128B.

### How many benchmarks does Gemini 3.5 Flash-Lite cover on BenchLM?

Gemini 3.5 Flash-Lite currently has 10 sourced benchmark scores on BenchLM.

### How many benchmarks does Mistral Medium 3.5 128B cover on BenchLM?

Mistral Medium 3.5 128B currently has 7 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.5 Flash-Lite vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-5-flash-lite)
- [Mistral Medium 3.5 128B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-mistral-medium-3-5-128b)
- [Gemini 3.5 Flash-Lite vs GPT-6 Astra](/compare/gemini-3-5-flash-lite-vs-gpt-6-astra)
- [Mistral Medium 3.5 128B vs GPT-6 Astra](/compare/gpt-6-astra-vs-mistral-medium-3-5-128b)

## Explore More

- [Gemini 3.5 Flash-Lite profile](/models/gemini-3-5-flash-lite)
- [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)