{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2023-12-11-mixtral/","md":"https://postcutoff.com/e/2023-12-11-mixtral/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":"2023-12-11-mixtral","date":"2023-12-11","date_precision":"day","short_title":"Mistral AI releases Mixtral 8x7B, an open mixture-of-experts model","deck":null,"takeaway":"Paris-based Mistral AI released Mixtral 8x7B under Apache 2.0, a sparse mixture-of-experts model that matched or beat Llama 2 70B and GPT-3.5 on many benchmarks while using ~13B active parameters per token.","category":"open-source","category_label":"Open source","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Mixtral of experts (Mistral AI)","url":"https://mistral.ai/news/mixtral-of-experts","type":"official","group":"primary","domain":"mistral.ai"},{"n":2,"title":"Mixtral of Experts (arXiv)","url":"https://arxiv.org/abs/2401.04088","type":"paper","group":"primary","domain":"arxiv.org"}],"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Mistral AI"],"title":"Mistral AI releases Mixtral 8x7B, an open mixture-of-experts model","summary":"Paris-based Mistral AI released Mixtral 8x7B under Apache 2.0, a sparse mixture-of-experts model that matched or beat Llama 2 70B and GPT-3.5 on many benchmarks while using ~13B active parameters per token.","key_facts":["Announced 11 December 2023 (weights shared via torrent days earlier)","46.7B total parameters, ~12.9B active per token","Apache 2.0 license","Paper: arXiv 2401.04088"],"key_numbers":[],"tags":["llm","open-weights","mixture-of-experts","europe"],"science":null,"body_md":"## What happened\n\nMistral published a high-quality open-weights sparse MoE model with a fully permissive license.\n\n## Why it matters\n\nPopularized mixture-of-experts in open models (later used by DeepSeek-V3, Llama 4, Qwen) and established Europe's leading AI startup.","disputed":[],"related":[{"id":"2024-12-26-deepseek-v3","url":"https://postcutoff.com/e/2024-12-26-deepseek-v3/","date":"2024-12-26","date_precision":"day","short_title":"DeepSeek-V3: frontier-level open model trained for ~$5.6M in GPU time","deck":null,"takeaway":"Upended assumptions about the cost of frontier AI and China's position; it was the base for DeepSeek-R1 weeks later.","category":"open-source","category_label":"Open source","importance":5,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":2,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["DeepSeek"]},{"id":"2023-07-18-llama-2","url":"https://postcutoff.com/e/2023-07-18-llama-2/","date":"2023-07-18","date_precision":"day","short_title":"Meta releases Llama 2 with a commercial-use license","deck":null,"takeaway":"Legitimized open-weights LLMs in industry and intensified the open vs. closed AI policy debate.","category":"open-source","category_label":"Open source","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":2,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Meta","Microsoft"]}],"people":[],"posts":[],"videos":[],"models":[],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":null,"in_training_data":true},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":null,"in_training_data":true},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":null,"in_training_data":true},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":null,"in_training_data":true}],"short_url":null}