DeepSeek V4 Pro vs Mistral Large 3 for legal writing: which is better in 2026?
A head-to-head look at DeepSeek V4 Pro and Mistral Large 3 for legal writing. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For legal writing in May 2026, DeepSeek V4 Pro edges out Mistral Large 3 on the contextWindow metric. Cheapest frontier-class pricing.
Side-by-side specs
| Spec | DeepSeek | Mistral |
|---|---|---|
| Intelligence index | 72.8 | 69.8 |
| Coding index | 74.5 | 67.4 |
| Context window | 256K tokens | 256K tokens |
| Speed (tok/s) | 120 | 115 |
| Input $/M | $0.27 | $2.00 |
| Output $/M | $1.10 | $6.00 |
| Released | Mar 4, 2026 | Jan 14, 2026 |
How they handle legal writing
DeepSeek V4 Pro: Cheapest frontier-class pricing. The main caveat is weaker english creative writing.
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:
- DeepSeek V4 Pro: $1.29 per 1,000 queries
- Mistral Large 3: $7.80 per 1,000 queries
Verdict by sub-task
- Best raw quality on legal writing:
- Best price: DeepSeek V4 Pro
- Longest context: DeepSeek V4 Pro
- Fastest: DeepSeek V4 Pro
FAQ
Is DeepSeek V4 Pro better than Mistral Large 3 for legal writing?
On May 2026 benchmarks (artificialanalysis.ai), DeepSeek V4 Pro ranks higher than Mistral Large 3 for legal writing on the contextWindow metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, DeepSeek V4 Pro or Mistral Large 3?
DeepSeek V4 Pro costs $0.27 input and $1.10 output per million tokens. Mistral Large 3 costs $2.00 input and $6.00 output per million tokens.
Can I use both DeepSeek and Mistral in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run DeepSeek V4 Pro and Mistral Large 3 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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