Fable 5 built a landing page, then security-reviewed its own code for zero fixes. Here is why a clean result was a scope record, not proof the code is safe.
X Square Robot’s WALL name covers an open-weight release, a published research model, an announced flagship, and whatever software ran in the homes it describes. This Tier C briefing separates what you can download from what you can only read about, and flags every claim Future Stack Reviews could not verify.
RL environments are not one buyable product. What the 2026 funding cluster is actually selling, and who owns task, reward, and fidelity when it breaks.
DeepSeek retires deepseek-chat and deepseek-reasoner on July 24. Its Anthropic API accepts Claude-shaped requests but remaps the model and ignores several fields.
Mistral’s Leanstral 1.5 is an Apache-2.0 open-weight code agent for Lean 4 proof engineering. The model is free to access; the verification system around it is not. A document-first briefing on what it does, what it really costs to operate, where its benchmarks hold, and which teams should adopt it or skip it.
Grok 4.5 pricing isn’t one number. The xAI API, Grok Build, and Cursor differ on cost, usage limits, and data handling. A document-first buyer’s guide.
Meta removed Muse Image’s Instagram @-mention feature on July 10, 2026, not the model. What the opt-out actually covered, and what is still unresolved.
Anthropic restored Claude Fable 5 on July 1, but it returned as a capped, separately metered entitlement. On a Max 5x account, FSR found tokens in Claude Code, a percentage meter in the Claude app, and usage credits at $0.00, with no official way to convert between them. A Tier B hands-on look at Fable 5’s usage limit, credits, and the cost you cannot yet read.
Claude Sonnet 5 keeps Sonnet 4.6’s per-token price, but a new tokenizer and three breaking API changes make migration the real cost. What to check before you switch.
OpenAI published GPT-5.6 Sol’s prices, but the model is gated to approved partners and METR’s independent evaluation came back unstable.