DeepSeek V4 Pro vs Mistral Large 3: cost efficiency vs open weights sovereignty
DeepSeek V4 Pro remains cheaper for almost all volume profiles, particularly on outputs. Mistral Large 3 is excellent if you prefer a European-hosted model with robust multi-lingual capabilities.
Serverless pricing versus flagship open weights.
Mistral Large 3 represents Europe's flagship open weights champion. DeepSeek V4 Pro offers highly optimized serverless API pricing. Both target enterprise tasks but feature different pricing models.
By TechCompare · Updated
Cost Comparison
Based on 100,000 input tokens (50% cached), 5,000 output tokens, and 100 requests.
Side-by-side specs
| Spec | DeepSeek V4 Pro | Mistral Large 3 |
|---|---|---|
| Input Cost (per M) | $0.435 (better on this spec) | $0.50 |
| Output Cost (per M) | $0.87 (better on this spec) | $2.00 |
| Cached Input (per M) | $0.0036 (better on this spec) | $0.05 |
| Batch Discount | 0% | 50% (better on this spec) |
How they differ
DeepSeek V4 Pro costs $0.435 per million input tokens and $0.87 per million output tokens. Mistral Large 3 runs at $0.50 per million input tokens and $2.00 per million output tokens. Mistral offers a 50% batch discount and 90% caching discount, whereas DeepSeek offers a 99.17% caching discount.
Verdict
DeepSeek is 13% cheaper on input ($0.435 vs $0.50) and roughly 2.3x cheaper on output ($0.87 vs $2.00). Its 99.17% cache discount drops input to $0.0036/M while Mistral bottoms out at $0.05/M. Mistral's one cost lever is its 50% batch discount, which DeepSeek doesn't offer, but that only helps bulk-async workloads. The real reason to pick Mistral is EU residency and language coverage, not the price line.
Which should you pick?
Choose DeepSeek V4 Pro
Extremely cost-sensitive enterprise pipelines and high-volume outputs.
Choose Mistral Large 3
European residency requirements, sovereign cloud setups, and multi-lingual reasoning.