Claude Sonnet 4.5 vs Mistral Small 4
Complete pricing and performance comparison between Anthropic's Claude Sonnet 4.5 and Mistral's Mistral Small 4.
Quick Verdict
Cheaper
Mistral Small 4
20.0x cheaper input, 25.0x cheaper output
Larger Context
Mistral Small 4
256K vs 200K
Pricing Comparison
| Spec | Claude Sonnet 4.5 | Mistral Small 4 | Difference |
|---|---|---|---|
| Provider | Anthropic | Mistral | |
| Input / 1M tokens | $3 | $0.15 | Mistral Small 4 is 95% more expensive |
| Output / 1M tokens | $15 | $0.6 | Mistral Small 4 is 96% more expensive |
| Context Window | 200K | 256K | 1x difference |
| Max Output | 64K | 33K |
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | Claude Sonnet 4.5 | Mistral Small 4 | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0075 | $0.0003 | Mistral Small 4 saves $0.0072 |
10 requests 10K in / 3K out | $0.075 | $0.0033 | Mistral Small 4 saves $0.072 |
100 requests 100K in / 30K out | $0.750 | $0.033 | Mistral Small 4 saves $0.717 |
1,000 requests 1M in / 300K out | $7.50 | $0.330 | Mistral Small 4 saves $7.17 |
10,000 requests 10M in / 3M out | $75.00 | $3.30 | Mistral Small 4 saves $71.70 |
1M requests/mo 1B in / 300M out | $7500.00 | $330.00 | Mistral Small 4 saves $7170.00 |
Pros & Cons
Claude Sonnet 4.5 Strengths
- +Higher max output tokens
Mistral Small 4 Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (256K vs 200K)
When to Use Each Model
Choose Claude Sonnet 4.5 for
- →Generating long-form content or detailed code
Choose Mistral Small 4 for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4.5 or Mistral Small 4?
For input tokens, Mistral Small 4 is 20.0x cheaper at $0.15/1M tokens. For output tokens, Mistral Small 4 is 25.0x cheaper at $0.6/1M tokens. At typical usage (1M input + 300K output), Claude Sonnet 4.5 costs $7.50 vs Mistral Small 4 at $0.330.
What's the context window difference?
Claude Sonnet 4.5 supports 200K context (200,000 tokens), while Mistral Small 4 supports 256K (256,000 tokens). Mistral Small 4 can handle 1x more context in a single request.
When should I choose Claude Sonnet 4.5 over Mistral Small 4?
Choose Claude Sonnet 4.5 when you need: Higher max output tokens. Choose Mistral Small 4 when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (256K vs 200K).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Claude Sonnet 4.5 = $75.00, Mistral Small 4 = $3.30. At 10K input + 1K output per request (longer conversations): Claude Sonnet 4.5 = $450.00, Mistral Small 4 = $21.00.
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