Gemini 3.1 Pro vs Mistral Small 4
Gemini 3.1 Pro vs Mistral Small 4: Mistral Small 4 is cheaper for input-heavy usage ($0.15/M vs $2.00/M input tokens), while Gemini 3.1 Pro is better for long-context tasks (1,000,000 tokens).
Direct answer: choose Mistral Small 4 for lower token spend and choose Gemini 3.1 Pro when your workload needs longer context.
Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Gemini 3.1 Pro
Mistral Small 4
Cost Differences
Mistral Small 4 costs less than Gemini 3.1 Pro
Quick Recommendation
Winner for direct API pricing: Mistral Small 4. At the default workload, Mistral Small 4 saves about $22.65/month ($275.575/year) versus Gemini 3.1 Pro.
Feature Comparison
| Feature | Gemini 3.1 Pro | Mistral Small 4 |
|---|---|---|
| Provider | Mistral AI | |
| Input Price | $2.00/1M tokens | $0.15/1M tokens |
| Output Price | $12.00/1M tokens | $0.60/1M tokens |
| Context Window | 1,000,000 tokens | 128,000 tokens |
| Max Output | 65,536 tokens | 16,384 tokens |
| Category | flagship | efficient |
| Capabilities | textvisionaudiovideocodereasoning | textvisioncodereasoning |
| Release Date | 2/19/2026 | 3/18/2026 |
Gemini 3.1 Pro vs Mistral Small 4: Which Should You Choose?
Choosing between Gemini 3.1 Pro and Mistral Small 4 depends on your priorities: cost efficiency, context length, or raw capability. Mistral Small 4 is the more affordable option at $0.15/1M input tokens — 93% cheaper than Gemini 3.1 Pro. Meanwhile, Gemini 3.1 Pro offers a significantly larger context window at 1,000,000 tokens vs 128,000 for Mistral Small 4.
These models come from different providers — Google and Mistral AI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Google, switching to Mistral AIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
These models target different tiers: Gemini 3.1 Pro is a flagship model while Mistral Small 4 is efficient. This means they're optimized for different workloads. Gemini 3.1 Pro is built for complex tasks that require deeper reasoning, while Mistral Small 4 offers better value for routine operations.
Output costs matter too. Gemini 3.1 Pro charges $12.00/1M output tokens vs $0.60 for Mistral Small 4. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Mistral Small 4 has the edge here at $0.60/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Gemini 3.1 Pro when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (audio, video)
- • You need longer outputs (up to 65,536 tokens)
- • You're already using Google's API ecosystem
Choose Mistral Small 4 when:
- • Budget is a primary concern
- • You're already using Mistral AI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Pros and Caveats at a Glance
Gemini 3.1 Pro
- • Input pricing: $2.00/M tokens
- • Output pricing: $12.00/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 65,536 tokens
Watch out for
- • Higher input cost than Mistral Small 4
- • Higher output cost than Mistral Small 4
Mistral Small 4
- • Input pricing: $0.15/M tokens
- • Output pricing: $0.60/M tokens
- • Context window: 128,000 tokens
- • Max output: 16,384 tokens
Watch out for
- • Smaller context window than Gemini 3.1 Pro
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Gemini 3.1 Pro (Google)
Mistral Small 4 (Mistral AI)
Start using Gemini 3.1 Pro today
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Sign Up for Mistral AI →Frequently Asked Questions
Which is cheaper, Gemini 3.1 Pro or Mistral Small 4?▼
What is the context window difference between Gemini 3.1 Pro and Mistral Small 4?▼
Which model is better for AI Agent / Agentic Workflows?▼
Which model has better overall pricing for heavy usage?▼
Where can I compare Google and Mistral AI API pricing beyond this model matchup?▼
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