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Mistral Small 4 API Pricing

Mistral Small 4 is the cheap multimodal Mistral tier, and it just got less cheap: $0.15/M input and $0.60/M output, against $0.10 / $0.30 before. Input is up 1.5x and output has doubled, with no announcement on the vendor's page - the card simply shows different numbers. It remains an Apache 2.0 open-weight model, described by Mistral as a hybrid unifying instruct, reasoning and coding.

Input - per 1M tokens
$0.15/M
Source Mistral active
Output - per 1M tokens
$0.60/M
Use for cost checks active
Cached input
$0.015/M
Cache 10% of input, per model -90%
Effective - agentic blend
$0.0842/M
92/8 split - 82% cache
§ 01 / TERMINAL

Run the numbers.

Calculator pre-loaded with current Mistral Small 4 rates from Mistral's pricing page. Tweak spend or output mix to compare this model with nearby alternatives.

$ /mo
Workload split
Prompt cache hit rate
Tokens you can process
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Words equivalent (English)
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Effective rate
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Open full calculator (all models · share URL · CSV) →
§ 02 / SCENARIOS

Real-world presets.

AGENT LOOP

Repo-wide bug fix

$0.00738/task
81k in - 7k out~13,544 units/$100
LONG DOC

Reading 100-page contracts

$0.012/doc
175k in - 8k out~8,563 units/$100
RAG SUPPORT

Support agent ticket triage

$0.00076/ticket
4k in - 1k out~132,065 units/$100
ASSISTANT TURN

Research planning turn

$0.00167/turn
12k in - 2k out~59,822 units/$100
§ 03 / TOKENIZER

Paste text. See tokens. See cost.

What's a token →
Calibrated · measured on the vendor's tokenizer · 2026-06-10 Auto-counts as you type

Counts use a chars-per-token calibration measured on the vendor's own published tokenizer (mistralai/Mistral-Nemo-Instruct-2407, 2026-06-10). English prose is typically within a few percent; code and non-Latin scripts tokenize heavier. For billing-exact counts use the vendor's count-tokens API.

Characters 225
Words 35
Tokens (estimated) 44 tokens
Cost as input · uncached $0.00001 USD
Cost as output · uncached $0.00003 USD
Cost as cached input $0.000001 USD
§ 04 / SHELF

Up against the shelf.

All models →
Model Input /M Output /M Effective blended Context Best for
Mistral Small 4 Current $0.15 cache $0.015 $0.60 $0.0842 agentic 92/8 256K Low-cost Mistral workloads
Mistral Large 3 $0.50 cache $0.05 $1.50 $0.241 +2.9× documented elsewhere — not on pricing page Open-weight multimodal work
Mistral Medium 3.5 $1.50 cache $0.15 $7.50 $0.962 +11× documented elsewhere — not on pricing page Agentic and coding workloads
GPT-5.4 mini $0.75 cache $0.075 $4.50 $0.541 +6.4× 400K Subagents and lightweight coding
Claude Sonnet 4.6 $3.00 cache $0.30 $15.00 $2.05 +24× 1M Current Claude agents
§ 05 / DEEP LINKS

Specific scenarios.

All calculators →

By comparison

Compare DeepSeek → Compare Mistral → Compare Grok →

Frequently asked.

Short answers for teams checking Mistral Small 4 pricing, status, and migration choices.

Q · 01 Is Mistral Small 4 still available? +
Mistral Small 4 is listed as active on Mistral's pricing page and appears as mistral-small-latest.
Q · 02 How much does Mistral Small 4 cost? +
Mistral Small 4 is listed at $0.15/M input and $0.60/M output.
Q · 03 Is cached-input pricing included? +
Yes. Mistral publishes a per-model cached-input rate on its inference pricing page: $0.015/M, 10% of the input rate. The calculator defaults to an 82% cache-hit rate, the assumption used across AI//COST; set it to 0% for workloads with no repeated prompt prefix.
Q · 04 What should teams compare it against? +
Use the shelf to compare nearby current models. Snapshot replacement: current same-provider models.
Q · 05 Why keep this page? +
These pages preserve live price checks, preview economics, and migration context in one consistent calculator format.
Y
Reviewed by Yaroslav Vikhariev Founder · AI//COST · Prices checked by hand against docs.mistral.ai · Last verified Sep 21, 2026
Methodology Report a correction More by Y.V.