ANTHROPIC
148 items
140 posts, 7 tools, 1 guide
Claude Tag brings Claude into Slack for Team and Enterprise users. What shared agent identity, channel context and team-visible work mean for developers.
A developer discovered that Claude Code's thinking output is summarized, not the raw reasoning. Here's what Anthropic's docs actually say - and why it matters.
Configure Claude Code permissions in settings.json: allow, deny, and ask rules, scope precedence, tool specifiers, and the headless flags you need for CI.
Claude Fable 5 and Mythos 5 were suspended for all users by a US export control directive. What it said, why it hit everyone, and what changed for developers.
Claude Mythos 5 vs Fable 5 explained. They are the same underlying model with different access and safeguards, which is why both were suspended together.
Is Claude Fable 5 down? It was suspended on June 12, 2026 by a US export directive, not an outage. What to use instead, and the update on its return.
Fable 5 was pulled by a US export control directive, disabling it and Mythos 5 for every customer. What happened, what still works, and what to do next.
A narrow jailbreak that other models can match does not get a frontier model recalled. So what actually happened? The plausible explanations, ranked.
Claude agents vs skills, untangled: agents are workers with their own context window, skills are instructions loaded on demand. Here is the decision table.
Claude Code dynamic workflows turn orchestration into a JavaScript script that runs agents in the background. How scripts, schemas, budgets and resume work.
Anthropic's docs say the tokenizer introduced with Opus 4.7 can use up to 35% more tokens for the same text. Here is what that does to per-request cost, max_tokens, and cross-model comparisons.
Fable 5 1M context workflows that actually work: whole-repo reviews, log archaeology, multi-doc synthesis - plus the honest math on when RAG still wins.
Claude effort levels explained: what low, medium, high, xhigh and max change on Fable 5, Opus 5.5 and Haiku 5.5, each default, and what a level costs.
Fable 5 long-running requests can run for minutes per turn and hours per run. Configure client timeouts, streaming keepalive, batch polling and background jobs.
Fable 5 memory tool setup with handlers, security and context editing. Anthropic says file-based memory helped Fable 5 three times more than it helped Opus 4.8.
A practical playbook for running Claude Fable 5 as the orchestrator over Sonnet and Haiku workers, with verified cost math on when the premium pays off.
Fable 5 prompt caching economics: cache-write vs cache-read pricing, 5-minute vs 1-hour TTL break-even math, and worked agent-loop examples.
Fable 5 task budgets give Claude a token countdown for a whole agentic loop. How the beta works, what it does not enforce, and where effort and max_tokens fit.
How to use Claude Fable 5 via claude.ai plans, the Claude API, Amazon Bedrock, Vertex AI and Microsoft Foundry, with model IDs, setup effort and prompt tips.
Claude Fable 5 latency measured: 109 seconds to first token at max effort vs 1.4s for Sonnet 4.6. When slow is fine, when it hurts, and how to route around it.

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