GPT-5.6 Sol vs Mistral Small 4
Pricing verdict: GPT-5.6 Sol vs Mistral Small 4: Mistral Small 4 is cheaper for input-heavy usage ($0.15/M vs $5.00/M input tokens), while GPT-5.6 Sol is better for long-context tasks (1,050,000 tokens).
Direct answer: choose Mistral Small 4 for lower token spend and choose GPT-5.6 Sol when your workload needs longer context.
Compare API pricing, input and output token costs, context windows, and monthly estimates on one page so you can pick the right model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5.6 Sol
Mistral Small 4
Cost Differences
Mistral Small 4 costs less than GPT-5.6 Sol
Quick Recommendation
Winner for direct API pricing: Mistral Small 4. At the default workload, Mistral Small 4 saves about $58.65/month ($713.575/year) versus GPT-5.6 Sol.
Feature Comparison
| Feature | GPT-5.6 Sol | Mistral Small 4 |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Input Price | $5.00/1M tokens | $0.15/1M tokens |
| Output Price | $30.00/1M tokens | $0.60/1M tokens |
| Context Window | 1,050,000 tokens | 128,000 tokens |
| Max Output | 128,000 tokens | 16,384 tokens |
| Category | flagship | efficient |
| Capabilities | textvisioncodereasoning | textvisioncodereasoning |
| Release Date | 6/26/2026 | 3/18/2026 |
GPT-5.6 Sol vs Mistral Small 4: Which Should You Choose?
Choosing between GPT-5.6 Sol 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 — 97% cheaper than GPT-5.6 Sol. Meanwhile, GPT-5.6 Sol offers a significantly larger context window at 1,050,000 tokens vs 128,000 for Mistral Small 4.
These models come from different providers — OpenAI and Mistral AI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with OpenAI, switching to Mistral AIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
These models target different tiers: GPT-5.6 Sol is a flagship model while Mistral Small 4 is efficient. This means they're optimized for different workloads. GPT-5.6 Sol is built for complex tasks that require deeper reasoning, while Mistral Small 4 offers better value for routine operations.
Output costs matter too. GPT-5.6 Sol charges $30.00/1M 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 GPT-5.6 Sol when:
- • You need a larger context window (1,050,000 tokens)
- • You need longer outputs (up to 128,000 tokens)
- • You're already using OpenAI'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
GPT-5.6 Sol
- • Input pricing: $5.00/M tokens
- • Output pricing: $30.00/M tokens
- • Context window: 1,050,000 tokens
- • Max output: 128,000 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 GPT-5.6 Sol
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
GPT-5.6 Sol (OpenAI)
Mistral Small 4 (Mistral AI)
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Which is cheaper, GPT-5.6 Sol or Mistral Small 4?▼
What is the context window difference between GPT-5.6 Sol and Mistral Small 4?▼
Which model is better for AI Agent / Agentic Workflows?▼
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Where can I compare OpenAI and Mistral AI API pricing beyond this model matchup?▼
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