GPT-5 vs Mistral Large 3 for react: which is better in 2026?
A head-to-head look at GPT-5 and Mistral Large 3 for react. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For react in May 2026, GPT-5 edges out Mistral Large 3 on the codingIndex metric. Strong at explaining hook rules and reconciler behavior.
Side-by-side specs
| Spec | GPT-5 | Mistral |
|---|---|---|
| Intelligence index | 78.4 | 69.8 |
| Coding index | 76.1 | 67.4 |
| Context window | 400K tokens | 256K tokens |
| Speed (tok/s) | 142 | 115 |
| Input $/M | $5.00 | $2.00 |
| Output $/M | $20.00 | $6.00 |
| Released | Aug 7, 2025 | Jan 14, 2026 |
How they handle react
GPT-5: Strong at explaining hook rules and reconciler behavior.
Mistral Large 3: EU data residency options. The main caveat is behind us labs on raw benchmarks.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- GPT-5: $23.50 per 1,000 queries
- Mistral Large 3: $7.80 per 1,000 queries
Verdict by sub-task
- Best raw quality on react:
- Best price: Mistral Large 3
- Longest context: GPT-5
- Fastest: GPT-5
FAQ
Is GPT-5 better than Mistral Large 3 for react?
On May 2026 benchmarks (artificialanalysis.ai), GPT-5 ranks higher than Mistral Large 3 for react on the codingIndex metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, GPT-5 or Mistral Large 3?
GPT-5 costs $5.00 input and $20.00 output per million tokens. Mistral Large 3 costs $2.00 input and $6.00 output per million tokens.
Can I use both GPT-5 and Mistral in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run GPT-5 and Mistral Large 3 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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