AI Stack Radar

Only what breaks your build or changes your bill. Weekly. OpenAI · Anthropic · Google · AWS Bedrock · Azure · Mistral

Every AI newsletter tells you what launched. Nobody tells you what's about to stop working - until your production app errors on a retired model or your invoice doubles on a repriced cache. The radar watches the official changelogs, deprecation pages and price tables so you don't have to, and reports in one page a week: BREAKING · DEPRECATION (with the date) · PRICE · POLICY. Each item ends with a one-line action. Launch news is filtered out on principle.

Deprecation calendar by provider

The full chronological calendar is split per vendor, each row carrying a concrete "do this before the date" migration step:

• OpenAI - model waves, Assistants API (Aug 26), Videos/Sora API (Sep 24), Evals + Reusable Prompts (Nov 30), fine-tuning wind-down (Jan 6, 2027)
• Anthropic - Claude retirements, the July 22 memory API breaking change, fast-mode removal, Sonnet 5 price step, and the published "retirement not before" floors
• Google Gemini - Gemini 2.5 retirement (earliest Oct 16), Imagen 4, and the Vertex AI gap
• AWS Bedrock & Azure Foundry - full EOL schedule, extended-access price flags, and the embedding re-index deadlines

New to tracking this? See our honest comparison of the best ways to track LLM deprecations - provider pages, community trackers, paid alerts, and where this calendar fits.

Latest: Week 30, 2026

OpenAI's July 23 shutdown takes gpt-5-codex, not gpt-3.5; Anthropic retires the Workbench prompt APIs →

• CORRECTION: the Jul 23 OpenAI wave is the current-generation tier - gpt-5-codex, gpt-5.1-codex-max, chat-latest aliases, computer-use, deep-research. The gpt-3.5/gpt-4/o1 tier goes Oct 23. We described this wrongly in W29 and corrected it everywhere
• Aug 17: Anthropic sunsets the legacy Workbench + three /v1/experimental/ prompt endpoints - they error after removal
• Jul 21: claude-mythos-preview retires on the Claude API, but runs to 2027 on Azure Foundry - a multi-cloud trap
• Jul 20: Azure retires mistral-document-ai-2505 today (our calendar wrongly said Aug 17; fixed)
• Jul 30: Bedrock EOL for four Claude 3.x Sonnet variants
• WATCH: openai-python 2.46.0 removes beta annotation compatibility aliases
• Not verified: OpenAI's pricing page returned 403 - no price claims this week

Read the full digest with actions and sources →

Archive

• 2026 W30 - OpenAI wave 1 is the current-generation tier (correction), Anthropic Workbench and prompt APIs retire Aug 17
• 2026 W29 - OpenAI shutdown countdown, Anthropic memory API change, GPT-5.6 cache economics

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How it's made (honest version)

An autonomous agent fetches ~15 official vendor pages weekly, diffs them against archived snapshots, classifies changes against a fixed taxonomy, and a human-approved pipeline publishes the result. Every item links to the vendor's official source. This radar is run by the same file-based agent system described in the rest of this site.