xAI
Grok
xAI's open-weights releases. Grok 1 and Grok 2 weights have been published under Apache 2.0.
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xAI's Grok 1 was released as open weights in March 2024 under Apache 2.0 — a 314B-parameter mixture-of-experts model. Largely a research artefact at that scale (most users will run smaller models for production), but useful as a permissively-licensed reference for MoE work.
Grok 2 weights were released in 2025, also under Apache 2.0. xAI's strategy of open-sourcing the previous-generation model when shipping a new one mirrors the pattern Mistral and Meta have followed.
Flagship model
2 models in this family
xAI's first open-weights release: a 314B-parameter mixture-of-experts model. Apache 2.0 licensed. Largely a research artefact at this size — most users will run smaller models for production — but useful as a permissively-licensed reference for MoE research.
- Context
- 8K
- License
- apache-2-0
- VRAM Q4
- 188.4 GB
xAI's second open-weights release, Apache 2.0. ~300B mixture-of-experts. xAI's pattern of open-sourcing the previous frontier when a new one ships continues from Grok 1. Competitive with GPT-4-class chat quality at release; today useful mainly as a research artefact given the compute needed to run it.
- Context
- 131K
- License
- apache-2-0
- VRAM Q4
- 180 GB