8 min read
Claude Sonnet 5 Developer Guide: Migration, API, and Effort Levels
Claude Sonnet 5 migration guide: the three breaking API changes from Sonnet 4.6, the new effort parameter, tokenizer impact and when to use each effort level.
ANTHROPIC
122 articles - page 5 of 11
8 min read
Claude Science Developer Guide 2026: AI Workbench for Research
Claude Science wraps Claude with scientific tools, local code execution and HPC access. How to get it, what it costs, and how it fits alongside Claude Code.
10 min read
MCP Servers vs Agent Skills: Which to Build in 2026
MCP servers vs Agent Skills: MCP gives an agent access to a live system, Skills teach it how to do a task. A five-question framework for which one to build.
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6 min read
Claude Sonnet 5 vs Sonnet 4.6: Should You Upgrade?
Claude Sonnet 5 vs Sonnet 4.6: near-Opus 4.8 results on coding and agents, but a new tokenizer uses about 30% more tokens. The upgrade decision, with numbers.
8 min read
Orchestrating a Fleet of Agents with Fable 5
Fable 5 agent orchestration with the manager-model pattern: a 1M-context orchestrator that delegates to cheaper workers via fan-out, pipelines and verify loops.
8 min read
Running Fable 5 Agent Fleets in Production: The Operations Guide
Fable 5 agent fleet operations: 30-day retention limits, refusal-rate alerting, per-role effort tuning, observability and availability planning for production.
6 min read
Fable 5 Is Back: The Anthropic Model the Government Switched Off
Fable 5 is back after a US export-control suspension. What the Anthropic model is, the specs and refusal behavior to handle, and when to pick Opus 4.8.
9 min read
Running Fable 5 Agents on Vercel's eve Framework
Run Fable 5 agents on Vercel eve: wire durable sessions, Sandbox code execution, approvals and subagents to a long-horizon model, with honest costs and fit.
8 min read
Fable 5 vs Opus 4.8: Which Should Orchestrate Your Agents?
Fable 5 vs Opus 4.8 as your agent fleet orchestrator: a fair head-to-head with a decision matrix by run length, budget, compliance and refusal tolerance.
9 min read
Refusals at Fleet Scale: Building Fable 5 Agents That Do Not Silently Fail
Fable 5 refusals return a 200 with stop_reason refusal, not an error. Detect them in every worker, fall back to Opus 4.8 and track refusal rate as a metric.
9 min read
Long-Horizon Agents: What Fable 5's 1M Context and Memory Actually Unlock
Long-horizon agents on Fable 5: what 1M context, 128K output, the memory tool, compaction and task budgets unlock, what is verified, and six projects to try.
7 min read
Claude Code Is Steganographically Marking Requests
Claude Code request marking: hidden unicode apostrophe and date-format markers flag timezone, domain and lab keywords. What was found and what to do about it.
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Showing 49-60 of 121 articles
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