Model comparison
Gemini 3.5 Flash-Lite vs Mistral Medium 3.5 128B
Head-to-head evidence from 16 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Evidence parity. Gemini 3.5 Flash-Lite and Mistral Medium 3.5 128B share 16 comparable benchmark results. 1 of 8 categories are comparable. 5 results are unique to Gemini 3.5 Flash-Lite; 9 to Mistral Medium 3.5 128B.
Updated July 21, 2026- Shared results
- 16
- Gemini 3.5 Flash-Lite only
- 5
- Mistral Medium 3.5 128B only
- 9
- Comparable categories
- 1 / 8
Treat this as a split decision. Gemini 3.5 Flash-Lite makes more sense if you want the cheaper token bill or you need the larger 1M context window; Mistral Medium 3.5 128B is the better fit if coding is the priority.
Confidence note. This is a partial-evidence comparison with 16 shared benchmark results across 5 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Gemini 3.5 Flash-Lite and Mistral Medium 3.5 128B finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Mistral Medium 3.5 128B is also the more expensive model on tokens at $1.50 input / $7.50 output per 1M tokens, versus $0.30 input / $2.50 output per 1M tokens for Gemini 3.5 Flash-Lite. That is roughly 3.0x on output cost alone. Gemini 3.5 Flash-Lite gives you the larger context window at 1M, compared with 256K for Mistral Medium 3.5 128B.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Gemini 3.5 Flash-Lite | Δ | Mistral Medium 3.5 128B |
|---|---|---|---|
| Coding | Gemini 3.5 Flash-Lite54.2 | Margin→ 23.4 | Mistral Medium 3.5 128B77.6 |
| Agentic | Gemini 3.5 Flash-Lite63.4 | MarginNo overlap | Mistral Medium 3.5 128BNot measured |
| Reasoning | Gemini 3.5 Flash-Lite72.2 | MarginNo overlap | Mistral Medium 3.5 128BNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3.5 Flash-Lite$0.3 input / $2.5 output | Mistral Medium 3.5 128B$1.5 input / $7.5 output | Gemini 3.5 Flash-Lite has the lower combined listed price. |
| Generation speedtokens per second | Gemini 3.5 Flash-LiteNot available | Mistral Medium 3.5 128BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 3.5 Flash-LiteNot available | Mistral Medium 3.5 128BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 3.5 Flash-Lite1M | Mistral Medium 3.5 128B256K | Gemini 3.5 Flash-Lite lists the larger context window. |
Benchmark Deep Dive
Agentic13 benchmarks
| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 54% | — | Not comparable |
| OSWorld-VerifiedSource | 74% | — | Not comparable |
| GDPval-AASource | 1140 | 929 | Gemini 3.5 Flash-Lite leads |
| AA Agentic IndexSource | 26.8% | 19.0% | Gemini 3.5 Flash-Lite leads |
| GDPval-AASource | 32.0% | 21.4% | Gemini 3.5 Flash-Lite leads |
| AA BriefcaseSource | 634 | 506 | Gemini 3.5 Flash-Lite leads |
| AA Tau3 BankingSource | 16.5% | 14.4% | Gemini 3.5 Flash-Lite leads |
| τ³-bench resultsSource | — | 91.4% | Not comparable |
| τ²-bench resultsSource | — | 94.2% | Not comparable |
| Gert LabsSource | — | 39.10% | Not comparable |
| AA EnterpriseOps-GymSource | — | 33.7% | Not comparable |
| AA Harvey LABSource | — | 69.1% | Not comparable |
| terminalBenchHardSource | — | 33.3% | Not comparable |
CodingMistral Medium 3.5 128B wins5 benchmarks
| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 54.0% | — | Not comparable |
| SWE-bench ProSource | 54.2% | — | Not comparable |
| AA Coding IndexSource | 49.3% | 46.9% | Gemini 3.5 Flash-Lite leads |
| AA-SciCodeSource | 40.9% | 39.6% | Gemini 3.5 Flash-Lite leads |
| SWE-bench VerifiedSource | — | 77.6% | Not comparable |
Reasoning3 benchmarks
Knowledge7 benchmarks
| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 36.5% | 29.9% | Gemini 3.5 Flash-Lite leads |
| AA-GPQA DiamondSource | 83.8% | 74.8% | Gemini 3.5 Flash-Lite leads |
| AA-HLESource | 17.5% | 12.8% | Gemini 3.5 Flash-Lite leads |
| AA-Omniscience IndexSource | 6.9% | -36.3% | Gemini 3.5 Flash-Lite leads |
| AA-Omniscience AccuracySource | 30.3% | 25.1% | Gemini 3.5 Flash-Lite leads |
| AA-Omniscience Hallucination RateSource | 33.5% | 82.0% | Gemini 3.5 Flash-Lite leads |
| AA Openness IndexSource | — | 33.3% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Result |
|---|---|---|---|
| AA-MMMU-ProSource | 79.0% | 64.9% | Gemini 3.5 Flash-Lite leads |
Inst. Following1 benchmarks
| Benchmark | Gemini 3.5 Flash-Lite | Mistral Medium 3.5 128B | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 68.8% | Not comparable |
Frequently Asked Questions (2)
Which is better, Gemini 3.5 Flash-Lite or Mistral Medium 3.5 128B?
Gemini 3.5 Flash-Lite and Mistral Medium 3.5 128B are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for coding, Gemini 3.5 Flash-Lite or Mistral Medium 3.5 128B?
Mistral Medium 3.5 128B has the edge for coding in this comparison, averaging 77.6 versus 54.2. Inside this category, AA Coding Index is the benchmark that creates the most daylight between them.
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