Claude Sonnet 4.5 vs Mistral Medium 3.1
Compare Anthropic and Mistral AI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Claude Sonnet 4.5
Mistral Medium 3.1
Cost Differences
Mistral Medium 3.1 costs less than Claude Sonnet 4.5
Feature Comparison
| Feature | Claude Sonnet 4.5 | Mistral Medium 3.1 |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Input Price | $3.00/1M tokens | $0.40/1M tokens |
| Output Price | $15.00/1M tokens | $2.00/1M tokens |
| Context Window | 200,000 tokens | 131,072 tokens |
| Max Output | 64,000 tokens | 16,384 tokens |
| Category | balanced | balanced |
| Capabilities | textvisioncode | textcodereasoning |
| Release Date | 9/29/2025 | 8/1/2025 |
Claude Sonnet 4.5 vs Mistral Medium 3.1: Which Should You Choose?
Choosing between Claude Sonnet 4.5 and Mistral Medium 3.1 depends on your priorities: cost efficiency, context length, or raw capability. Mistral Medium 3.1 is the more affordable option at $0.40/1M input tokens — 87% cheaper than Claude Sonnet 4.5. Meanwhile, Claude Sonnet 4.5 offers a significantly larger context window at 200,000 tokens vs 131,072 for Mistral Medium 3.1.
These models come from different providers — Anthropic and Mistral AI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Anthropic, switching to Mistral AIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the balanced category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Mistral Medium 3.1 would save you roughly $2,730.00/month compared to Claude Sonnet 4.5. For startups and indie developers, that difference can be significant.
Output costs matter too. Claude Sonnet 4.5 charges $15.00/1M output tokens vs $2.00 for Mistral Medium 3.1. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Mistral Medium 3.1 has the edge here at $2.00/1M output tokens.
Multimodal capabilities: Claude Sonnet 4.5 supports vision (image inputs) while Mistral Medium 3.1 is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose Claude Sonnet 4.5 when:
- • You need a larger context window (200,000 tokens)
- • You need longer outputs (up to 64,000 tokens)
- • You're already using Anthropic's API ecosystem
Choose Mistral Medium 3.1 when:
- • Budget is a primary concern
- • You're already using Mistral AI's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Claude Sonnet 4.5 (Anthropic)
Mistral Medium 3.1 (Mistral AI)
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