An updated Lean 4 formal proof engineering model optimised for automated theorem proving and autoformalization. 119B total parameters, 6.5B active.
Specification
mistral listing
Context
262K
Max output
128K
Released
2026-06-30
Knowledge cutoff
—
Retires
—
Open weights
yes
Input
text, image
Output
text
Price
US dollars per million tokens · mistral list price
Input
free
Output
free
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| mistralvendor | free | free | — | — | 262K | 128K 131K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | mistral | Input | free |
| 2026-10-08 | mistral | Input | free |
| 2026-09-02 | mistral | Output | free |
| 2026-10-08 | mistral | Output | free |
Other listings of this model
this page is one of them
The corpus files Leanstral 1.5 under several keys. This page is the labs-leanstral-1-5-1 listing. The full record — every host, every price and every benchmark score — is on the main Leanstral 1.5 page.
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