{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/mistral-small-4/","md":"https://postcutoff.com/m/mistral-small-4/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"mistral-small-4","name":"Mistral Small 4","org":"Mistral AI","family":"Mistral Small","released":"2026-03-16","status":"current","type":"reasoning-llm","modality_in":["text","image"],"modality_out":["text"],"open_weights":true,"model_license":"apache-2.0","context_window":256000,"max_output":null,"knowledge_cutoff":null,"pricing":{"input":0.15,"output":0.6,"unit":"per 1M tokens (USD)","source":"https://docs.mistral.ai/models/model-cards/mistral-small-4-0-26-03"},"price_line":"$0.15 in, $0.60 out per 1M tokens","access":[{"provider":"Mistral API","model_id":"mistral-small-2603","endpoint":"https://api.mistral.ai/v1/chat/completions","docs":"https://docs.mistral.ai/models/model-cards/mistral-small-4-0-26-03"},{"provider":"OpenRouter","model_id":"mistralai/mistral-small-2603","url":"https://openrouter.ai/mistralai/mistral-small-2603"},{"provider":"Hugging Face","url":"https://huggingface.co/mistralai/Mistral-Small-4-119B-2603"},{"provider":"Web app","url":"https://chat.mistral.ai"}],"capabilities":[{"name":"Instruct + reasoning + coding unified","detail":"First Mistral model unifying Magistral (reasoning), Pixtral (multimodal) and Devstral (agentic coding) in one model; reasoning_effort none/high per request.","first":false,"discovered":"launch","source":"https://mistral.ai/news/mistral-small-4/"},{"name":"119B MoE with ~6.5B active","detail":"119B total / 6.5B active parameters, vision input, 256K context at $0.15/$0.6.","first":false,"discovered":"launch","source":"https://docs.mistral.ai/models/model-cards/mistral-small-4-0-26-03"}],"entry":null,"notes":"Alias mistral-small-latest (v26.03). Announced Mar 16, 2026.","verified":"2026-09-29","body_md":"Cheap, fast open model for most production workloads, with optional reasoning.\n\n```bash\ncurl https://api.mistral.ai/v1/chat/completions -H \"Authorization: Bearer $MISTRAL_API_KEY\" -H \"Content-Type: application/json\" \\\n -d '{\"model\":\"mistral-small-latest\",\"messages\":[{\"role\":\"user\",\"content\":\"Hello\"}]}'\n```\n\nSources: https://docs.mistral.ai/models/model-cards/mistral-small-4-0-26-03 , https://mistral.ai/news/mistral-small-4/","page_url":"https://postcutoff.com/m/mistral-small-4/","events_after":null,"major_after":null,"historic_after":null,"missing_at_launch":null,"events_since_release":1906,"you_url":"https://postcutoff.com/you/mistral-small-4/","briefings":null}