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Head to head · prices checked 22 September 2026

Mistral Medium 3.5 vs Gemini 3.8 Flash

The European mid-priced model against Google's high-volume workhorse. Both list prices from the makers’ own pages, and what three everyday jobs cost on each.

What a job costsEvery model

US dollars, standard rate, shortest context band. Price only: this page does not rank quality.

1,000 support replies
2×what Mistral Medium 3.5 costs next to Gemini 3.8 Flash
Mistral Medium 3.5
$7.50
Gemini 3.8 Flash
$3.75
Mistral Medium 3.5, per M tokens
$1.50 / $7.50
Gemini 3.8 Flash, per M tokens
$0.75 / $3.75

3,000 tokens in and 400 out each, at list price.

Per million tokens, Mistral Medium 3.5 costs $1.50 in and $7.50 out; Gemini 3.8 Flash costs $0.75 in and $3.75 out. 1,000 support replies cost $7.50 on Mistral Medium 3.5 and $3.75 on Gemini 3.8 Flash, so Mistral Medium 3.5 costs twice as much. Mistral Medium 3.5 reads up to 256K tokens at once, Gemini 3.8 Flash up to 1.05M.

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.

Mistral Medium 3.5 and Gemini 3.8 Flash: list prices and specifications
FactMistral Medium 3.5Gemini 3.8 Flash
MakerMistralGoogle
TierFlagshipsWorkhorses
Input, per M tokens$1.50$0.75
Output, per M tokens$7.50$3.75
Cached inputNot published$0.075
Context window256K1.05M
Released28 Apr 20262 Sep 2026
WeightsOpenClosed

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.

Cost of 1,000 runs of three jobs on Mistral Medium 3.5 and Gemini 3.8 Flash
JobMistral Medium 3.5Gemini 3.8 FlashCheaper
Support reply3,000 in, 400 out.$7.50$3.75Gemini 3.8 Flash, 50% less
Document summary25,000 in, 1,000 out.$45.00$22.50Gemini 3.8 Flash, 50% less
Agent task80,000 in (70,000 cached), 3,000 out.$143$24.00Gemini 3.8 Flash, 83% 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 Medium 3.5
Cached price not published (the pricing FAQ says only 'up to 90%' off). Batch 50% off per https://mistral.ai/pricing. Open weights under a modified MIT license. 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 Medium 3.5 or Gemini 3.8 Flash.

Run both for a quarter of list price

AIGROW API credit covers Mistral Medium 3.5 and Gemini 3.8 Flash and is metered at the list prices above: $25 buys $100 of usage.

See API creditCompare every model

Prices checked 22 September 2026