Comparison · prices as of 2026-07-04 · re-verified 2026-08-18
Gemini 2.5 Flash vs Mistral Medium 3.5
On price alone, Gemini 2.5 Flash (Google) runs about 73% cheaper than Mistral Medium 3.5 for a typical chat workload (2K input + 500 output tokens, 1,000 requests/day). Whether that's the right trade depends on the capability gap — the breakdown below shows where each one wins.
Price per million tokens
| Spec | Gemini 2.5 Flash | Mistral Medium 3.5 |
|---|---|---|
| Input / MTok | $0.30 | $1.50 |
| Output / MTok | $2.50 | $7.50 |
| Context window | 1M | 128K |
| Max output | 66K | 32K |
| Class | workhorse | workhorse |
Estimated monthly cost by workload
Same models, three realistic usage levels. The gap between them scales with volume, so the right pick can change as you grow.
| Workload | Gemini 2.5 Flash | Mistral Medium 3.5 | Cheaper |
|---|---|---|---|
| Light — chatbot 0.5K in / 0.2K out · 200 req/day | $3.90 | $13.50 | Gemini 2.5 Flash |
| Typical — assistant 2K in / 0.5K out · 1K req/day | $55.50 | $203 | Gemini 2.5 Flash |
| Heavy — RAG / agent 8K in / 2K out · 5K req/day | $1,110 | $4,050 | Gemini 2.5 Flash |
Which should you pick?
- Cheapest overall: Gemini 2.5 Flash — about 73% less per month on a typical assistant workload.
- Gemini 2.5 Flash is cheaper on both input and output, so it stays cheaper whether your workload is prompt-heavy or generation-heavy.
- Largest context window: Gemini 2.5 Flash at 1M tokens vs 128K — the one to pick if you feed in whole documents or codebases.
Frequently asked questions
Is Gemini 2.5 Flash or Mistral Medium 3.5 cheaper?
Gemini 2.5 Flash is cheaper — roughly 73% less per month on a typical assistant workload (2K input + 500 output tokens, 1,000 requests/day).
What do Gemini 2.5 Flash and Mistral Medium 3.5 cost per million tokens?
Gemini 2.5 Flash is $0.30 per million input tokens and $2.50 per million output. Mistral Medium 3.5 is $1.50 input and $7.50 output. Prices are first-party API list rates as of 2026-07-04.
Which has the larger context window, Gemini 2.5 Flash or Mistral Medium 3.5?
Gemini 2.5 Flash does, at 1M tokens versus 128K for Mistral Medium 3.5.
When should I choose Mistral Medium 3.5 over Gemini 2.5 Flash?
Both are workhorse-class models, so choose Mistral Medium 3.5 when it measurably wins on your own evals or you prefer its provider (Mistral); otherwise Gemini 2.5 Flash does the same job for less.
Related comparisons
Sources: Google pricing · Mistral pricing. Run your own numbers in the cost calculator.