Mistral Small 4 API pricing
Official Mistral list price, last checked Oct 29, 2026. Updated Oct 29, 2026.
Mistral Small 4 costs $0.15 per 1M input tokens and $0.60 per 1M output tokens, cached input at $0.015, and a 256K-token context window, per Mistral's official pricing page (checked Oct 29, 2026). It's one of the cheapest models we track: number 12 of 77 by blended price ($0.2625 per 1M tokens at a 3 to 1 input to output mix). LMArena doesn't list it on the boards we track, so we don't rank its quality. For less, look at Step 3.5 Flash ($0.15 blended).
Mistral Small 4 price per million tokens
| Mistral Small 4 price per million tokens | USD |
|---|---|
| Input | $0.15 |
| Cached input | $0.015 |
| Output | $0.60 |
| Blended, 3 parts input to 1 part output | $0.2625 |
| Context window | 256K tokens |
Mistral lists one flat rate for Mistral Small 4: no long-prompt surcharge or tier is shown on the pricing page we checked.
What Mistral Small 4 costs for real work
List-price estimates for a month, no discounts. Our math, not a quote: change the token counts in the plan vs API calculator.
| Workload | Tokens a month | Mistral Small 4 | MiniMax-M3.1 Flash | Step 3.5 Flash |
|---|---|---|---|---|
| Light: a side project or personal assistant | 2M in, 0.5M out | $0.60 | $0.60 | $0.35 |
| Medium: a small team or one product feature | 20M in, 5M out | $6.00 | $6.00 | $3.50 |
| Heavy: a production app | 200M in, 50M out | $60.00 | $60.00 | $35.00 |
| Medium with 80% of input cached | 20M in (16M cached), 5M out | $3.84 | $3.84 | $2.22 |
How Mistral Small 4 ranks on LMArena
It isn't on any LMArena board we track as of Oct 29, 2026. We don't estimate quality for unranked models. See the best model for each task for ranked options.
Closest rivals to Mistral Small 4
The models nearest in price, other makers first. Ranks are on LMArena, where we have them.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| MiniMax-M3.1 Flash | $0.15 / $0.60 | $0.2625 | Same price, no score to separate them. Compare |
| GLM-5.3 Flash | $0.15 / $0.50 | $0.2375 | GLM-5.3 Flash wins on price. Compare |
| Hunyuan Hy3 | $0.132 / $0.528 | $0.231 | Hunyuan Hy3 wins on price. Compare |
| Qwen3.8 Flash | $0.15 / $0.47 | $0.23 | Qwen3.8 Flash wins on price. Compare |
Cheaper alternatives to Mistral Small 4
At least 40% cheaper blended, cheapest at the bottom of the list we found.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| Step 3.5 Flash | $0.10 / $0.30 | $0.15 | Step 3.5 Flash wins on price. Compare |
| Qwen3.7 Flash | $0.03 / $0.13 | $0.055 | Qwen3.7 Flash wins on price. Compare |
More from Mistral
FAQ
How much does the Mistral Small 4 API cost per million tokens?
$0.15 per 1M input tokens and $0.60 per 1M output tokens, plus $0.015 per 1M for cached input, as of Oct 29, 2026. A typical 3 to 1 input to output mix works out to $0.2625 per 1M tokens.
Does Mistral Small 4 charge more for long prompts?
No. Mistral lists a single rate on its pricing page.
Is Mistral Small 4 cheaper than MiniMax-M3.1 Flash?
About the same. A medium month (20M input and 5M output tokens) costs $6.00 on Mistral Small 4 and $6.00 on MiniMax-M3.1 Flash at list price.
How does Mistral Small 4 rank on LMArena?
It isn't listed on the LMArena boards we track, so we show no quality rank rather than guess.
What is a cheaper alternative to Mistral Small 4?
Step 3.5 Flash costs $0.10 in and $0.30 out per 1M tokens, about 1.8x less blended.
Where does this Mistral Small 4 price come from?
From Mistral's official pricing page, which we check every day. This page was last checked Oct 29, 2026.