CLAUDE LABJP
VERSION — v2.1.227 landed on August 10 with no new features, just fixes around plan detection and CI behaviorAUTO — Two days remain until August 14, when auto mode becomes the default in Claude Code for Pro, Max, and TeamCI — Bash commands no longer fail across the board under claude-code-action with allowed_non_write_users on GitHub-hosted runnersBILLING — Sessions started with an expired token could misread your plan and nudge Max users toward usage credits; that is now fixedSUNSET — The legacy Workbench and the experimental prompt tool APIs retire on August 17, five days outPRICE — Sonnet 5 promo pricing at $2/$10 per Mtok runs through August 31, moving to $3/$15 on September 1VERSION — v2.1.227 landed on August 10 with no new features, just fixes around plan detection and CI behaviorAUTO — Two days remain until August 14, when auto mode becomes the default in Claude Code for Pro, Max, and TeamCI — Bash commands no longer fail across the board under claude-code-action with allowed_non_write_users on GitHub-hosted runnersBILLING — Sessions started with an expired token could misread your plan and nudge Max users toward usage credits; that is now fixedSUNSET — The legacy Workbench and the experimental prompt tool APIs retire on August 17, five days outPRICE — Sonnet 5 promo pricing at $2/$10 per Mtok runs through August 31, moving to $3/$15 on September 1
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Fable 5

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Claude API3model selection1automation1Sonnet 51Opus 4.81extended thinking1streaming1migration1headless1cost management1logging1
API & SDK/2026-07-05Advanced

Fable 5 Is Back Worldwide and Sonnet 5 Is the Default — Where Each of the Three Models Belongs in a Solo Automation Stack

With Fable 5 redeployed worldwide and Sonnet 5 now the default, solo automation suddenly has three capable top-tier models to reach for. Instead of ranking them, this piece assigns each a role and captures that in a policy object with a fallback ladder and run-level logging.

API & SDK/2026-06-23Advanced

When Thinking Is Always On, Prefill Quietly Stops Working — Fixing Streaming and Token Budgets for Fable 5

Fable 5 thinks by default. Prefill no longer applies, the first streamed block isn't text, and max_tokens has to leave room for reasoning. Here is how I fixed those three broken assumptions in my own automated publishing pipeline.

API & SDK/2026-06-14Advanced

Record Which Model Actually Answered — Attestation Logging for Headless Pipelines

Persist the model field and usage from every API response so you can detect when the served model differs from the one you requested, and reconcile per-model cost ahead of the usage credits change.