Mistral Medium 3.5 vs Gemini 3.1 Pro

Side-by-side API pricing comparison: which model gives you more for less?

Last verified Jun 2026 · Prices per 1M tokens

Cheaper Input
Mistral Medium 3.5
$1.5 vs $2
Cheaper Output
Mistral Medium 3.5
$7.5 vs $12
Max Savings
38%
by switching to Mistral Medium 3.5
Save up to 38%
Switch from Gemini 3.1 Pro to Mistral Medium 3.5 · $1.5 input / $7.5 output per 1M tokens

Quick Comparison

FeatureMistral Medium 3.5Gemini 3.1 Pro
Provider Mistral Google
Tier Mid Mid
Input Price $1.5 $2
Output Price $7.5 $12
Context Window 128K 1M
Verified Jun 2026 Jun 2026

When to Use Each

💰 Cost-Sensitive Workloads

High-volume APIs, batch processing, and startups watching runway.

→ Use Mistral Medium 3.5 — 25% cheaper input, 38% cheaper output

🧠 Complex Reasoning

Tasks requiring advanced reasoning, code generation, or nuanced analysis.

→ Either model works — compare quality on your specific tasks

⚡ High-Throughput APIs

Real-time chatbots, streaming responses, and latency-sensitive apps.

→ Mistral Medium 3.5 for cost at scale, Gemini 3.1 Pro if quality matters more

🔬 Prototyping & Testing

Development, experimentation, and non-critical workloads.

→ Use Mistral Medium 3.5 — same context (128K), much cheaper

Track price changes for both models

APIpulse Pro monitors 49 models across 10 providers. Get alerts when Mistral Medium 3.5 or Gemini 3.1 Pro prices change.

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Frequently Asked Questions

Is Mistral Medium 3.5 cheaper than Gemini 3.1 Pro?

Yes. Mistral Medium 3.5 costs $1.5 input / $7.5 output per 1M tokens, while Gemini 3.1 Pro costs $2 input / $12 output. That's 25% cheaper on input and 38% cheaper on output.

How much can I save switching to Mistral Medium 3.5?

For a typical workload (1M input + 500K output tokens/month), Mistral Medium 3.5 costs $5.25/month vs $8.00/month for Gemini 3.1 Pro. That's a savings of $2.75/month (38%).

Which should I choose: Mistral Medium 3.5 or Gemini 3.1 Pro?

Choose Mistral Medium 3.5 for cost efficiency. Choose Gemini 3.1 Pro for Google ecosystem benefits. Mistral Medium 3.5 has 128K context vs Gemini 3.1 Pro's 1M.