Gemini 2.5 Flash vs Mistral Small
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
- PriceGemini 2.5 Flash
Gemini 2.5 Flash is roughly 2.0× cheaper on output tokens ($0.30 vs $0.60 per 1M).
- Context windowGemini 2.5 Flash
Gemini 2.5 Flash accepts 1.0M tokens vs 128K, 8.2× the room for long documents and codebases.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesGemini 2.5 Flash
Gemini 2.5 Flash supports 3 modalities (text, vision, audio) vs 1 for Mistral Small.
- OpennessMistral Small
Mistral Small ships open weights (Apache-2.0); Gemini 2.5 Flash is API-only.
On balance Gemini 2.5 Flash edges ahead, winning 3 of 5 categories against Mistral Small's 1. Gemini 2.5 Flash is roughly 2.0× cheaper on output tokens ($0.30 vs $0.60 per 1M). Gemini 2.5 Flash accepts 1.0M tokens vs 128K, 8.2× the room for long documents and codebases.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Gemini 2.5 Flash handles text, vision, audio while Mistral Small handles text, which can be the deciding factor before you even look at benchmarks. Mistral Small ships open weights (Apache-2.0); Gemini 2.5 Flash is API-only.
Gemini 2.5 Flash is the newer of the two, released 7 months after Mistral Small, which usually means a more recent knowledge cutoff and updated safety post-training. Gemini 2.5 Flash is usually picked for rag and long context workloads, while Mistral Small sees more deployments in cheapest llm and fastest llm. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Gemini 2.5 Flash | Mistral Small |
|---|---|---|
| Provider | Mistral | |
| Released | Apr 2025 | Sep 2024 |
| Modalities | text, vision, audio | text |
| Context window | 1.0M tokens | 128K tokens |
| Max output | , | , |
| Input · 1M | $0.075 / 1M tokens | $0.20 / 1M tokens |
| Output · 1M | $0.30 / 1M tokens | $0.60 / 1M tokens |
| Knowledge cutoff | 2025-01 | , |
| Open weights | No | Yes (Apache-2.0) |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$0.675 vs $1.50
- Heavy usage, 1M in / 500k out per day$6.75 vs $15.00
- RAG workload, 5M in / 200k out per day$13.05 vs $33.60
Light usage, 100k in / 50k out per day: $0.675 vs $1.50 per month, model A comes out ahead. Heavy usage, 1M in / 500k out per day: $6.75 vs $15.00 per month, model A comes out ahead. RAG workload, 5M in / 200k out per day: $13.05 vs $33.60 per month, model A comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Gemini 2.5 Flash$0.022
- Mistral Small$0.050
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
Gemini 2.5 Flash fits when…
- Cheap and fast
- Long context
- Solid vision
- Cost-sensitive workloads, 2.0× cheaper than Mistral Small on output tokens.
- Long-context tasks, handles 1.0M tokens vs 128K for Mistral Small.
Mistral Small fits when…
- Apache-2.0 open-weight
- Fast and cheap
- Self-hosting and on-prem requirements, open weights (Apache-2.0).
Consider Gemini 3 Pro
Google's late-2025 flagship, set new benchmarks on long-context, vision, and reasoning at competitive pricing.
Frequently asked
Is Gemini 2.5 Flash or Mistral Small cheaper?
Gemini 2.5 Flash is cheaper at $0.30 / 1M tokens per million output tokens, vs $0.60 / 1M tokens for Mistral Small.Which has the larger context window?
Gemini 2.5 Flash accepts 1.0M tokens vs 128K for Mistral Small.Is Gemini 2.5 Flash or Mistral Small better for coding?
Both Gemini 2.5 Flash and Mistral Small are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Mistral Small ships open weights (Apache-2.0). Gemini 2.5 Flash is API-only.When were Gemini 2.5 Flash and Mistral Small released?
Gemini 2.5 Flash was released by Google on 2025-04-09. Mistral Small was released by Mistral on 2024-09-18.
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