# Mistral vs DeepSeek: which open-weight LLM wins in 2026?

**Source:** https://promtable.com/compare/mistral-vs-deepseek

> Mistral wins on EU residency, function-calling reliability, and Apache 2.0 licensing across the line. DeepSeek wins on price-per-quality, reasoning model lineage (R-series), and biggest open-weight scale (DeepSeek V3 / R3). Pick Mistral for EU + function calling, DeepSeek for cheapest reasoning + scale.

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Mistral wins on EU residency, function-calling reliability, and Apache 2.0 licensing across the line. DeepSeek wins on price-per-quality, reasoning model lineage (R-series), and biggest open-weight scale (DeepSeek V3 / R3). Pick Mistral for EU + function calling, DeepSeek for cheapest reasoning + scale.

## At a glance

| Dimension | Mistral | DeepSeek |
|---|---|---|
| Largest open-weight model | Mistral Large 2 (~123B dense) | **DeepSeek V3 (671B MoE, 37B active)** ✓ |
| Reasoning model | Mistral Medium 3 reasoning | **DeepSeek R3 (R-series lineage)** ✓ |
| Licensing | **Apache 2.0 across open tier** ✓ | DeepSeek License (permissive but custom) |
| Function calling | **Best in open-weight tier** ✓ | Solid |
| Multilingual | **EU languages-strong** ✓ | Chinese + English-strong |
| Price-per-quality | Competitive | **Best in 2026** ✓ |
| Hosted API | Mistral La Plateforme + AWS Bedrock + Azure | DeepSeek API + Together / Fireworks / Together |
| EU residency | **First-class (France-hosted)** ✓ | Via 3rd-party EU hosts |
| Best for | EU residency, function calling, Apache 2.0 | Cheapest reasoning, biggest MoE scale, R-series |

## Verdict

Mistral is the right pick for EU residency (France-hosted, GDPR-friendly), Apache 2.0 across the open tier, and best-in-open-weight function calling. DeepSeek is the right pick for cheapest-per-quality reasoning (R-series), biggest open-weight scale (V3 671B MoE), and aggressive innovation pace. Many cost-sensitive production stacks default to DeepSeek for bulk inference + reasoning, with Mistral for EU-compliance workloads.

## When to pick which

- **Mistral** — EU residency, Apache 2.0, function calling, multilingual EU.
- **DeepSeek** — Cheapest reasoning, biggest open-weight MoE, aggressive innovation.

## FAQ

### EU residency?

Mistral — France-hosted, GDPR-friendly.

### Cheapest reasoning?

DeepSeek R3 — cheapest reasoning-tier API in 2026.

### Biggest model?

DeepSeek V3 — 671B MoE, 37B active.

## Related

- [/compare/mistral-vs-llama-4](https://promtable.com/compare/mistral-vs-llama-4)
- [/compare/mistral-vs-claude](https://promtable.com/compare/mistral-vs-claude)
- [/compare/deepseek-r2-vs-claude-4-6](https://promtable.com/compare/deepseek-r2-vs-claude-4-6)
- [/alternatives/mistral](https://promtable.com/alternatives/mistral)
- [/alternatives/deepseek](https://promtable.com/alternatives/deepseek)

*Last updated: 2026-06-01*
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Original page: https://promtable.com/compare/mistral-vs-deepseek
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