Very long inputs
Choose Grok 4.20 Reasoning
Grok 4.20 Reasoning reads up to 1M tokens per request, against 256k for Mistral Large 3.
Grok 4.20 Reasoning vs Mistral Large 3: price, context and capabilities
Choose Grok 4.20 Reasoning for very long inputs and the latest release. Choose Mistral Large 3 for self-hosting and data control.
In short
- A price comparison is not possible: one of them has no comparable published price.
- Grok 4.20 Reasoning reads more per request: 1M tokens against 256k.
- Grok 4.20 Reasoning is the newer model (March 2026, against December 2025).
- Only Grok 4.20 Reasoning offers reasoning, prompt caching, batch api.
- Only Mistral Large 3 offers self-hostable.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Self-hosting and data control
Choose Mistral Large 3
Mistral Large 3 has open weights, so you can run it on your own servers; Grok 4.20 Reasoning is only available through its provider.
Latest release
Choose Grok 4.20 Reasoning
Grok 4.20 Reasoning is the newer release (March 2026, against December 2025 for Mistral Large 3).
Specifications side by side
| Grok 4.20 Reasoning | Mistral Large 3 | |
|---|---|---|
| Provider | xAI | Mistral AI |
| Category | Language models | Language models |
| Status | Generally available | Legacy |
| Headline price | $1.56 / 1M tokens | No data |
| Input | $1.25 / 1M tokens | No data |
| Output | $2.50 / 1M tokens | No data |
| Cached input | $0.20 / 1M tokens | No data |
| Context window | 1M | 256k |
| Max output | No data | No data |
| Released | March 2026 | December 2025 |
| Knowledge cutoff | No data | No data |
| Licence | Proprietary | Open weights |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Tool calling, Structured output, Self-hostable |
| API model id | grok-4.20-0309-reasoning | mistral-large-2512 |
Benchmarks side by side
Leader in bold.
| Benchmark | Grok 4.20 Reasoning | Mistral Large 3 |
|---|---|---|
| Intelligence Index | No data | 9.3 |
| Terminal-Bench Hard | No data | 15.9% |
| SciCode | No data | 36.6% |
| GPQA Diamond | No data | 68% |
| Humanity's Last Exam | No data | 4.2% |
| IFBench (instruction following) | No data | 36.2% |
| τ²-Bench (agentic tool use) | No data | 24.6% |
| MMMU-Pro (visual reasoning) | No data | 55.7% |
| Long-context reasoning (AA-LCR) | No data | 36% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Grok 4.20 Reasoning or Mistral Large 3?
Choose Grok 4.20 Reasoning for very long inputs and the latest release. Choose Mistral Large 3 for self-hosting and data control.
Which is cheaper, Grok 4.20 Reasoning or Mistral Large 3?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, Grok 4.20 Reasoning or Mistral Large 3?
Grok 4.20 Reasoning reads more per request: 1M tokens against 256k.
What is the difference between Grok 4.20 Reasoning and Mistral Large 3?
Grok 4.20 Reasoning is made by xAI and Mistral Large 3 by Mistral AI. A price comparison is not possible: one of them has no comparable published price. Grok 4.20 Reasoning reads more per request: 1M tokens against 256k. Grok 4.20 Reasoning is the newer model (March 2026, against December 2025). Only Grok 4.20 Reasoning offers reasoning, prompt caching, batch api. Only Mistral Large 3 offers self-hostable.
Which is newer, Grok 4.20 Reasoning or Mistral Large 3?
Grok 4.20 Reasoning was released on March 2026 and Mistral Large 3 on December 2025.