Mistral Large 4 vs DeepSeek V4 Pro
There is no quality verdict yet: the AIGROW small-business benchmark has not run Mistral Large 4. On price, DeepSeek V4 Pro costs less: $1.32 in and $3.96 out per million tokens, against $1.36 in and $4.18 out for Mistral Large 4.
Mistral Large 4 is still a preview, so its price can change. US dollars, standard rate, shortest context band. Price only: the benchmark has not run both.
- Mistral Large 4
- $5.75
- DeepSeek V4 Pro
- $5.54
- Mistral Large 4, per M tokens
- $1.36 / $4.18
- DeepSeek V4 Pro, per M tokens
- $1.32 / $3.96
3,000 tokens in and 400 out each, at list price.
Frontier APIs from Europe and China, close on both input and output list price. 1,000 support replies cost $5.75 on Mistral Large 4 and $5.54 on DeepSeek V4 Pro, so Mistral Large 4 costs 4% more. Mistral Large 4 was released on 6 Oct 2026, DeepSeek V4 Pro was released on 13 Aug 2026.
What each one costs
The API price per million tokens and the cheapest app plan with each model, from the makers’ own pages. Each name opens that model’s full price page.
- Mistral Large 4
- On the Mistral API, Mistral Large 4 costs $1.36 per million input tokens and $4.18 per million output tokens. Vibe has a free plan and paid plans from $14.99/mo (Pro); the plan list does not name Mistral Large 4. Plan prices read 20 October 2026.
- DeepSeek V4 Pro
- On the DeepSeek API, DeepSeek V4 Pro costs $1.32 per million input tokens and $3.96 per million output tokens.
Side by side
Each maker’s published rate for its standard tier. Cached input is what a repeated prompt prefix costs once the provider has stored it.
| Fact | Mistral Large 4 | DeepSeek V4 Pro |
|---|---|---|
| Maker | Mistral | DeepSeek |
| Tier | Flagships | Flagships |
| Input, per M tokens | $1.36 | $1.32 |
| Output, per M tokens | $4.18 | $3.96 |
| Cached input | $0.14 | $0.044 |
| Context window | 1M | 1M |
| Released | 6 Oct 2026 | 13 Aug 2026 |
| Weights | Closed weights | Open weights |
What a job costs on each
1,000 runs of each job at the two list prices. The gap moves from job to job because the models price input, output and cached context differently.
| Job | Mistral Large 4 | DeepSeek V4 Pro | Cheaper |
|---|---|---|---|
| Support reply3,000 in, 400 out. | $5.75 | $5.54 | DeepSeek V4 Pro, 4% less |
| Document summary25,000 in, 1,000 out. | $38.18 | $36.96 | DeepSeek V4 Pro, 3% less |
| Agent task80,000 in (70,000 cached), 3,000 out. | $35.94 | $28.16 | DeepSeek V4 Pro, 22% less |
The token counts are ours, chosen to look like real work; the prices are the makers’. A model with no published cache price bills the agent task’s repeated context at its full input rate.
The small print
What each base rate leaves out, from the makers’ own pages: surcharges, discounts, promotions and cache pricing.
- Mistral Large 4
- Mistral Large 4 is in Public Preview. The original price is recorded: Mistral shows a 50% launch discount ($0.68 / $2.09, cached $0.07) for two weeks from 6 October 2026. Mistral calls it open-weight, but the weights were not yet published when read ("Open weights are coming soon"). 1.05T total, 52B active parameters. Batch 50% off. Mistral’s pricing page
- DeepSeek V4 Pro
- Peak-hour rate, recorded as the list price. Off-peak (all hours outside 01:00-04:00 and 06:00-10:00 UTC on weekdays) is half: $0.66 / $1.98, cache hit $0.022. Peak and off-peak pricing started 2026-08-16. API name deepseek-v4-pro serves DeepSeek-V4-Pro-0813 (V4 first shipped 2026-04-24). Max output 384K. DeepSeek’s pricing page
Other comparisons
Every head to head on the list that involves Mistral Large 4 or DeepSeek V4 Pro.
Compare Mistral Large 4 and DeepSeek V4 Pro with 44 other models
The price list sets every model’s input and output price side by side, with what a support reply, a document summary and an agent task cost on each.
Prices checked 15 October 2026