Model comparison
Grok 4.20 Reasoning vs Mistral Medium 3
Compare Grok 4.20 Reasoning vs Mistral Medium 3 API pricing: input/output token costs, cache pricing, context windows, workload estimates, and routing fit.
Grok 4.20 Reasoning
xai · grok-4.20-0309-reasoning
- Input
- $1.25
- Output
- $2.5
- Context
- 1M
Mistral Medium 3
mistral · mistral/mistral-medium-2505
- Input
- $0.4
- Output
- $2
- Context
- 131.1K
Quick take
Mistral Medium 3 has the lower input price at $0.4 per 1M input tokens. Mistral Medium 3 is cheaper for the example blended workload below. Grok 4.20 Reasoning has the larger context window at 1M tokens.
Choose Grok 4.20 Reasoning if...
- Grok 4.20 Reasoning is safer for long documents, repository analysis, and RAG prompts because it has the larger context window.
- Grok 4.20 Reasoning gives more room for long generated answers, reports, or code output.
- Grok 4.20 Reasoning is stronger when the same large prompt or document is reused because it supports prompt caching.
Choose Mistral Medium 3 if...
- Mistral Medium 3 is the better default for cost-sensitive traffic and repeated high-volume calls.
Example workload cost
Estimates use input tokens plus 20% output tokens. They exclude provider discounts, cache hits, and tool/search surcharges.
| Workload | Grok 4.20 Reasoning | Mistral Medium 3 | Cheaper |
|---|---|---|---|
| 1M input + 200K output | $1.75 | $0.80 | Mistral Medium 3 |
| 10M input + 2M output | $17.50 | $8.00 | Mistral Medium 3 |
| 100M input + 20M output | $175.00 | $80.00 | Mistral Medium 3 |
Context, output, and capability fit
Grok 4.20 Reasoning provides the larger context window. Check max output separately when the task needs long reports, code generation, or full-document rewrites.
- Grok 4.20 Reasoning max output
- 1M
- Mistral Medium 3 max output
- 8.2K
- Grok 4.20 Reasoning features
- prompt caching, function calling
- Mistral Medium 3 features
- function calling
Risk notes for Grok 4.20 Reasoning
- No major capability risk is flagged in this snapshot, but provider pages should still be verified before production routing.
Risk notes for Mistral Medium 3
- Smaller context window: long PDFs, codebases, or RAG prompts may need chunking.
- No prompt caching in this snapshot: repeated long-context calls may be more expensive.
Routing tags
frontierreasoningagentslong-contextmultimodalragbudgetcodingopen-weightenterpriselocal-open