Model Tracker
Leanstral
Leanstral is an AI model made by Mistral AI. Mistral AI retired it on 30 June 2026. Its context window is 256,000 tokens. Its weights are open.
Leanstral is an AI model made by Mistral AI. Mistral AI retired it on 30 June 2026. Its context window is 256,000 tokens. Its weights are open. Its licence is Apache 2.0.
- Released
- Not confirmed: two readings disagree: 2026-03-16 and 2026-07-02
- Status
- Not confirmed: two readings disagree: retired and deprecated
- Takes
- Not confirmed: The model card shows a “Modalities” heading but prints no modality values, so supported input types are not confirmed.
- Returns
- Not confirmed: The model card shows a “Modalities” heading but prints no modality values, so supported output types are not confirmed.
- Open weights
- Yes — mistral.ai, read 16 October 2026
- Licence
- Apache 2.0 — docs.mistral.ai, read 16 October 2026
- Context window
- 256,000 tokens — docs.mistral.ai, read 16 October 2026
- Longest answer
- Not confirmed: The Leanstral model card does not print a maximum output limit. The limit shown for Leanstral 1.5 is for a different model version.
- Knowledge cutoff
- Not confirmed: The maker's Leanstral model card and announcement do not state a knowledge cutoff.
- API price, input
- Not confirmed: The maker's current API pricing page lists no Leanstral price. Its announcement calls the API endpoint free, but does not state a standard input price per 1,000,000 tokens.
- API price, output
- Not confirmed: The maker's current API pricing page lists no Leanstral price. Its announcement calls the API endpoint free, but does not state a standard output price per 1,000,000 tokens.
- Where
- API, Downloadable weights — mistral.ai, read 16 October 2026
- Parameters
- 119,000,000,000 — docs.mistral.ai, read 16 October 2026
- Model card
- Not confirmed: two readings disagree: https://docs.mistral.ai/models/leanstral-26-03 and https://docs.mistral.ai/models/leanstral-1-5
Questions
What is the context window of Leanstral?
The context window of Leanstral is 256,000 tokens, as Mistral AI prints it.
Are the weights of Leanstral open?
Yes: Mistral AI publishes the weights of Leanstral for download.
What is the licence of Leanstral?
The licence of Leanstral is Apache 2.0, as Mistral AI names it.
How many parameters does Leanstral have?
Leanstral has 119,000,000,000 parameters, as Mistral AI publishes it.
More from Mistral AI
- Codestral
- Codestral Mamba 7B
- Devstral 2
- Devstral Medium 1.0
- Devstral Small 1.0
- Devstral Small 1.1
- Devstral Small 2
- Leanstral 1.5
- Magistral Medium 1.0
- Magistral Medium 1.1
- Magistral Medium 1.2
- Magistral Small 1.0
- Magistral Small 1.1
- Magistral Small 1.2
- Mathstral 7B
- Ministral 3 14B
- Ministral 3 8B
- Ministral 8B
- Mistral 7B
- Mistral Large 1.0
- Mistral Large 2.0
- Mistral Large 2.1
- Mistral Large 3
- Mistral Large 4
Sources
- Leanstral - Mistral AI | Mistral Docs (read 16 October 2026)
- Leanstral: Open-Source foundation for trustworthy vibe-coding (read 16 October 2026)
- API pricing (read 16 October 2026)
- Labs (read 16 October 2026)