JULY 25, 2026 — WEIGHTS DROPPING, COMPUTE DEALS REVEALED, GROK BUILD OPENS
- Kimi K3 open weights Sunday — self-hosting guide now live — 2.8T params, Q4 MXFP4 is the deployment target, ~18 H100 80GB minimum, managed inference on Together AI/Fireworks expected Monday. Full self-hosting guide →
- SpaceX S-1: Anthropic pays Musk $1.25B/month for Colossus 1 — 300MW, 220K Nvidia GPUs, through May 2029. Clause: Musk can reclaim compute if Claude "harms humanity." He simultaneously sells Grok in direct competition with Claude. Full analysis →
- Grok Build open-sourced (Apache 2.0) — After privacy scandal (repo upload including SSH keys), xAI deleted all user data and released Grok Build codebase openly. Developers can now run the agent harness with any model. Grok coverage →
Story 1 — Kimi K3 Weights Sunday: What to Do Before They Drop
Kimi K3 is a 2.8T-parameter model. There is a 1 million token context window. Vision capabilities are native. Full model weights will be released by July 27. With weights 48 hours away, this is the moment to decide your self-hosting strategy before the release creates queue congestion on provider platforms. The practical deployment target is Q4 MXFP4 quantisation — roughly 1.4TB VRAM, achievable on approximately 18 H100 80GB GPUs. If you do not have GPU access, Together AI and Fireworks AI are the two most likely managed inference providers to list K3 within 48 hours of weights dropping — both have done this for DeepSeek V4 and Llama releases. Full self-hosting guide with cost estimates →
Story 2 — Anthropic's $1.25B/Month Musk Dependency
SpaceX's S-1 SEC filing revealed a deal renting 300 megawatts of compute capacity to Anthropic for $1.25 billion per month through May 2029. Elon Musk reserved the right to reclaim compute if their AI engages in actions that harm humanity. The structural conflict is unusual: Musk is competing with Anthropic for developers while renting Anthropic the machines it needs to compete. SpaceXAI is unusually positioned to make money even when developers choose Claude instead. For Anthropic, the deal resolves compute access through May 2029 — enough for at least two more model generations — but the "harms humanity" clause introduces a supply-chain risk that has no precedent in commercial cloud contracts. Full analysis of the Colossus deal →
Story 3 — Grok Build Goes Apache 2.0
xAI's grok CLI tool faced severe community backlash when it became apparent that running the command in a directory could upload that entire directory to xAI's Google Cloud buckets. One user reported running it in their home directory and seeing it upload SSH keys, password manager database, documents, photos, videos, everything. Musk responded: "As a precautionary measure, all user data that was uploaded to SpaceXAI before now will be completely and utterly deleted." xAI then released the entire Grok Build codebase under Apache 2.0. The practical upshot: developers can now fork the Grok Build agent harness and run it with any model — Claude Code, GPT, or Kimi K3 weights — without being tied to SpaceXAI's infrastructure or privacy terms. Open-sourcing the harness may expand the market for coding agents. SpaceXAI is unusually positioned to benefit from this even when developers choose a different model.
Sunday Watch — Kimi K3 Weights Drop + License Confirmation
What to check Sunday July 27: Moonshot AI HuggingFace page for weight files, license terms (MIT/Apache vs restrictive), community Q4 quants on r/LocalLLaMA within hours, and Together AI / Fireworks AI model listings for managed inference. Update your self-hosting plan based on the license — commercial use depends on it. Self-hosting guide →