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Notes from the studio — development, design, AI, industry shifts, career growth, and life around the team.
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Claude Opus 5 Is Here: Frontier-Class Work at Half the Price
Anthropic's new Claude Opus 5 nearly matches its top-tier Fable 5 model on coding and knowledge work at half the cost — and it ships at the same price as Opus 4.8.
Kimi K3 Is Here — And It's Chasing the Frontier at a Third of the Price
Moonshot AI's Kimi K3 is the largest open-weight model ever shipped. We break down how it stacks up against the closed US flagships it's chasing — OpenAI's GPT-5.6 Sol and Anthropic's Claude Fable 5 — on benchmarks, price, and openness.
OpenAI's GPT-5.6 — Sol, Terra, Luna: Does It Really Stack Up to Claude Fable 5?
OpenAI's GPT-5.6 arrives as a three-tier family — Sol, Terra, Luna — and beats Claude Fable 5 on its headline agentic benchmark, but the verified feedback so far tells a more mixed story.
OpenAI Launches GPT-5.6 with Three New Models: Sol, Terra, and Luna
OpenAI's GPT-5.6 family splits into three tiers — Sol, Terra, and Luna — each priced and tuned for a different job, from heavy-duty coding agents to cheap, high-volume automation.
Fable 5 Is Back — and Sonnet 5 Is the One You'll Reach For
June 30 was a two-headline day for Anthropic: the US cleared Claude Fable 5 to return, and Sonnet 5 shipped the same afternoon. One is the frontier you keep in your back pocket; the other is the near-Opus workhorse you'll actually run all day. Here's how they stack up.
Are Claude Fable 5 and Mythos 5 Back?
After a US directive pulled Anthropic's most powerful models offline on June 12, Claude Mythos 5 has been cleared for return to 100+ critical-infrastructure organizations — and Fable 5 is reportedly on track to follow. Here's what the models are and what's actually happening.
GPT-5.6 Lands in Preview: Sol, Terra, and Luna
OpenAI is previewing GPT-5.6 as a three-model family — Sol, the new flagship; Terra, a cheaper everyday workhorse; and Luna, a fast budget tier. Sol sets a record on Terminal-Bench 2.1 and edges out Claude Mythos 5. Here's what shipped and how to get it.
Claude Fable 5 Lands: The First Mythos-Class Model for Everyone
Anthropic just opened its top-tier Mythos class to the public with Claude Fable 5 — state-of-the-art capability wrapped in safeguards that fall back to Opus 4.8 on the riskiest queries. Here's what it does and how to get it.
Opus 4.7 to 4.8: The Upgrade That Fixed the Upgrade
Claude Opus 4.7 benchmarked well and felt worse — refusals, early give-ups, and a quiet token-cost creep. Here's what actually went wrong, how Opus 4.8 walked it back, and why we defected to Codex for the whole 4.7 run.
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