Mistral Large 4 vs Gemini 3.8 Flash
There is no quality verdict yet: the AIGROW small-business benchmark has not run Mistral Large 4. On price, Mistral Large 4 costs less: $0.70 in and $2.10 out per million tokens, against $0.75 in and $3.75 out for Gemini 3.8 Flash.
AIGROW credit covers Claude Opus 5.5, Claude Fable 5.2, Claude Fable 5.1, GPT-6 Astra, Claude Sonnet 5.5, GPT-6.1 Sol, GPT-6.1 Terra, Grok 4.7 and Gemini 4 Argon. Gemini 4 Argon below list price
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars, standard rate, shortest context band. Price only: the benchmark has not run both.
- Mistral Large 4
- $2.94
- Gemini 3.8 Flash
- $3.75
- Mistral Large 4, per M tokens
- $0.70 / $2.10
- Gemini 3.8 Flash, per M tokens
- $0.75 / $3.75
3,000 tokens in and 400 out each, at list price.
Mistral's flagship now lists below Google's workhorse Flash on both input and output. 1,000 support replies cost $3.75 on Gemini 3.8 Flash and $2.94 on Mistral Large 4, so Gemini 3.8 Flash costs 28% more. Mistral Large 4 was released on 6 Oct 2026, Gemini 3.8 Flash was released on 2 Sep 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 $0.70 per million input tokens and $2.10 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 22 October 2026.
- Gemini 3.8 Flash
- On the Google API, Gemini 3.8 Flash costs $0.75 per million input tokens and $3.75 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 | Gemini 3.8 Flash |
|---|---|---|
| Maker | Mistral | |
| Tier | Flagships | Workhorses |
| Input, per M tokens | $0.70 | $0.75 |
| Output, per M tokens | $2.10 | $3.75 |
| Cached input | $0.07 | $0.075 |
| Context window | 1M | 1.05M |
| Released | 6 Oct 2026 | 2 Sep 2026 |
| Weights | Open weights | Closed 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 | Gemini 3.8 Flash | Cheaper |
|---|---|---|---|
| Support reply3,000 in, 400 out. | $2.94 | $3.75 | Mistral Large 4, 22% less |
| Document summary25,000 in, 1,000 out. | $19.60 | $22.50 | Mistral Large 4, 13% less |
| Agent task80,000 in (70,000 cached), 3,000 out. | $18.20 | $24.00 | Mistral Large 4, 24% 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
- List price lowered from $1.36 / $4.18 (cached $0.14), read on 2026-10-15 with a two-week launch discount running. Open weights under the Mistral Ecosystem Open Weight License (version 26.10). 1.05T total, 52B active parameters. Batch 50% off. Mistral’s pricing page
- Gemini 3.8 Flash
- Launch price through 2026-12-31; from 2027-01-01 it becomes $1.50 / $7.50, cached $0.15. Batch and Flex 50% off; Priority $1.35 / $6.75. Cache storage $0.50 per MTok per hour (rising to $1.00). Google’s pricing page
Other comparisons
Every head to head on the list that involves Mistral Large 4 or Gemini 3.8 Flash.
Compare Mistral Large 4 and Gemini 3.8 Flash with 52 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 12 November 2026