Comparison · DeepSeek and Mistral
DeepSeek V4 Flash Vision Exp vs Mistral Large 4
Listed API prices of DeepSeek V4 Flash Vision Exp and Mistral Large 4 turned into the cost of the same three standard tasks and what each provider’s API documentation says about features that break on a switch. Output quality, speed and answer length are not compared.
Calculated impact cost per task and per month
For an L2 task (deep analysis over a 50,000-token document, 3 steps), DeepSeek V4 Flash Vision Exp costs $0.074 and Mistral Large 4 $0.118 at the prices listed in the United States on , so DeepSeek V4 Flash Vision Exp is 37.1 % less than Mistral Large 4, counting visible output only, without cache discounts or hidden reasoning.
| Task | DeepSeek V4 Flash Vision Exp, per task | Mistral Large 4, per task | DeepSeek V4 Flash Vision Exp, per month | Mistral Large 4, per month | DeepSeek V4 Flash Vision Exp vs Mistral Large 4, per task |
|---|---|---|---|---|---|
| L1Micro-task (classification or strict JSON extraction) | $0.0009per L1 task | $0.0015per L1 task | $13.49per month | $21.46per month | −37.1 % |
| L2Deep analysis over a 50,000-token document | $0.074per L2 task | $0.118per L2 task | $1,079.23per month | $1,716.96per month | −37.1 % |
| L3Agentic coding loop, 15 steps | $0.591per L3 task | $0.940per L3 task | $8,624.22per month | $13,720.35per month | −37.1 % |
Calculated Per month: 20 tasks an hour around the clock, 730 hours.
Prices USD per 1M tokens
| Price | DeepSeek V4 Flash Vision Exp | Mistral Large 4 |
|---|---|---|
| Input, per 1M tokens | $0.440 | $0.700 |
| Output, per 1M tokens | $1.32 | $2.10 |
| Price from | OpenRouter · source page (data) Published | Provider's price list · source page Published |
| Read | · the United States | · the United States |
| Context window | 1,048,576 tokens | 1,048,576 tokens |
What can I use it for? six common tasks, our data checks
Quality on your task: not measured by Measured Lab yet.
| Task | DeepSeek V4 Flash Vision Exp | Mistral Large 4 |
|---|---|---|
| Answer customer messages | — | Fits on price and context |
| Pull data from invoices and documents with strict JSON and page images | — | Fits on price and context |
| Summarize documents and meetings | — | Fits on price and context |
| Translate content | — | Fits on price and context |
| Chat assistant on your website | — | Fits on price and context |
| Write and review code with tool calls | — | Fits on price and context |
| Tasks it fits | — | 6 of 6 |
Checks of our data for six common tasks: a published price, a context window and answer length for the task and, where the task needs them, strict JSON output, page images and tool calls; prices, cost a month and terms for each model on its model card. DeepSeek V4 Flash Vision Exp is not in the model picker. Compare models for your own task in the model picker.
What breaks when you switch Published provider documentation
Moving from DeepSeek to Mistral, 1 of the 5 features may not carry over, by each provider’s documentation:
- Reasoning with tools — DeepSeek: yes; Mistral: not stated. Switching reasoning on can rule out some tool settings or output formats, or the other way round.
Moving from Mistral to DeepSeek, 2 of the 5 features may not carry over, by each provider’s documentation:
- Strict JSON schemas — Mistral: yes; DeepSeek: partly. Code that parses answers without checks starts failing where a provider promises only valid JSON, not your schema.
- Parallel tool calls — Mistral: yes; DeepSeek: not stated. An agent built around several calls per turn gets one call per turn: more round trips, more input tokens, slower runs.
| Feature of the API | DeepSeek | Mistral |
|---|---|---|
| Strict JSON schemas | Partly | Yes |
| Parallel tool calls | Not stated | Yes |
| Streamed tool arguments | Not stated | Not stated |
| Reasoning with tools | Yes | Not stated |
| Cache covers tool definitions | Not stated | Not stated |
What each provider’s own API documentation says, read ; “not stated” is not the same as “no”. Quotes and sources: what breaks when you switch AI APIs.
Price changes in the last 30 days
- The listed price of DeepSeek V4 Flash Vision Exp changed on on OpenRouter: input $0.22 → $0.44, output $0.65 → $1.32 per 1M tokens. Briefing
- The listed price of Mistral Large 4 changed on on OpenRouter: input $0.68 → $1.36, output $2.09 → $4.18 per 1M tokens.
- The listed price of Mistral Large 4 changed on on OpenRouter: input $1.36 → $0.70, output $4.18 → $2.10 per 1M tokens.
- The listed price of Mistral Large 4 changed on on the provider's price list: input $1.36 → $0.70, output $4.18 → $2.10 per 1M tokens.