https://changeledger.dev/ One weekly "what changed" feed for AI builders: model shutdowns, API price changes, and coding-plan limit and pricing changes. en-us Wed, 14 Oct 2026 12:00:00 GMT https://platform.openai.com/docs/deprecations changeledger-9da895686a40f1fe Wed, 14 Oct 2026 12:00:00 GMT Shutdown OpenAI notified developers on Oct 14 that gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14 and gpt-4.1-mini-2025-04-14 are deprecated. The recommended replacement is gpt-6-luna. Fine-tuned versions follow the same schedule as their base models. Effective: January 14, 2027. Source: https://platform.openai.com/docs/deprecations https://ai.google.dev/gemini-api/docs/pricing changeledger-14d527739c270a37 Tue, 13 Oct 2026 12:00:00 GMT Price On the paid tier, gemini-4-argon costs $2.00 input and $10.00 output (including thinking tokens) per 1M tokens through November 30, 2026, then $4.00 and $20.00 from December 1. Cached input is $0.10, then $0.20. It is not available on the free tier or the Google AI Pro plan. Effective: December 1, 2026. Source: https://ai.google.dev/gemini-api/docs/pricing https://forum.cursor.com/t/introducing-the-x-subscription/174450 changeledger-727ed6a749fe0921 Mon, 12 Oct 2026 12:00:00 GMT Price On the new plans, third-party models are not part of the included pool. Premium and above can use them at the model's API list price, paid from prepaid credit (Free and Plus can't). Cursor says that if you are on a current plan, your included third-party usage continues until you switch. Legacy Hobby, Start, Pro, Pro+, Ultra and Teams plans continue for existing customers. Effective: October 12, 2026. Source: https://forum.cursor.com/t/introducing-the-x-subscription/174450 https://cursor.com/docs/models-and-pricing changeledger-fe80af972dbcca5e Mon, 12 Oct 2026 12:00:00 GMT Plan limits Cursor's docs now list Free, Plus ($8/mo), Premium ($30), Super ($100) and Ultra ($200) as the plans for new customers, with usage of 1x, 4x, 15x and 50x Plus. Included usage is one pool shared with Grok and refreshes weekly. Plus is limited to Cursor's own models. Annual billing is $80, $300, $1,000 and $2,000 per year respectively. Effective: October 12, 2026. Source: https://cursor.com/docs/models-and-pricing https://ai.google.dev/gemini-api/docs/changelog changeledger-8a84adceca45c2af Thu, 08 Oct 2026 12:00:00 GMT Shutdown gemini-3.7-flash now routes to gemini-3.8-flash, and gemini-3.5-flash routes to gemini-3.6-flash. Both are no longer selectable in Google AI Studio. Google lists no shutdown date, and says the endpoints are not shutting down, so the practical change is that your calls quietly hit a different model. Update your model strings if you pin versions. Source: https://ai.google.dev/gemini-api/docs/changelog https://ai.google.dev/gemini-api/docs/changelog changeledger-b382adb6783308bc Thu, 08 Oct 2026 12:00:00 GMT Shutdown deep-research-pro-preview-12-2025 is deprecated and will be shut down on October 23, 2026. Google suggests moving the agent parameter in interactions.create to deep-research-preview-04-2026 (speed) or deep-research-max-preview-04-2026 (maximum comprehensiveness). Effective: October 23, 2026. Source: https://ai.google.dev/gemini-api/docs/changelog https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers changeledger-e9ba5105a9061c50 Thu, 08 Oct 2026 12:00:00 GMT Plan limits Ultrafast mode for GPT-6.1 Sol arrived in Codex and ChatGPT Work. Among Pro plans only Pro 500 includes it; buying credits on Pro 100 or Pro 200 does not unlock it at launch. OpenAI's help page says it draws your included allowance at 8x the Standard rate, then credits at 6x the Standard credit rate. Effective: October 8, 2026. Source: https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers https://support.claude.com/en/articles/17154008-monthly-api-credits-for-max-and-team-plans changeledger-385f10d8150207b9 Wed, 07 Oct 2026 12:00:00 GMT Plan limits Max 5x gets $100 a month, Max 20x gets $200, and Team gets $20 per Standard seat or $100 per Premium seat (pooled, capped at $500). Credits cover the Claude API, Managed Agents, the Agent SDK and the Console playground, but not interactive Claude Code or extra usage in the Claude apps. You claim them by linking a Console organization; they expire each billing cycle and don't change your plan's usage limits. Effective: October 7, 2026. Source: https://support.claude.com/en/articles/17154008-monthly-api-credits-for-max-and-team-plans https://docs.anthropic.com/en/release-notes/api changeledger-81c26bd30e248c75 Wed, 07 Oct 2026 12:00:00 GMT Price Anthropic lowered cache-read pricing on Claude Sonnet 5.5 to 0.05x the base input price (previously 0.1x). Cache writes and all other Sonnet 5.5 prices are unchanged. Effective: October 7, 2026. Source: https://docs.anthropic.com/en/release-notes/api https://platform.openai.com/docs/changelog changeledger-26e15a3008148cea Tue, 06 Oct 2026 12:00:00 GMT Plan limits Organizations are upgraded automatically as total credit purchases reach each tier's minimum. OpenAI points to its usage-tiers page for the monthly usage limits and for how to see per-model rate limits. Effective: October 6, 2026. Source: https://platform.openai.com/docs/changelog https://platform.openai.com/docs/deprecations changeledger-e7dcbea9444aaba4 Thu, 01 Oct 2026 12:00:00 GMT Shutdown gpt-5.3-codex and gpt-5.1 point to gpt-6-sol as the replacement; gpt-5.4-nano points to gpt-6-luna. OpenAI gave six months' notice. Effective: April 1, 2027. Source: https://platform.openai.com/docs/deprecations https://platform.openai.com/docs/deprecations changeledger-a2d7969c0cabc072 Thu, 01 Oct 2026 12:00:00 GMT Shutdown tts-1, tts-1-hd and both gpt-4o-mini-tts snapshots (2025-03-20 and 2025-12-15) are deprecated. OpenAI recommends migrating to gpt-realtime-2.1-mini; see the Realtime API guide to plan the move. Effective: January 6, 2027. Source: https://platform.openai.com/docs/deprecations https://docs.anthropic.com/en/docs/about-claude/model-deprecations changeledger-1addd679058a3357 Wed, 30 Sep 2026 12:00:00 GMT Shutdown Anthropic announced on Sep 30 that claude-sonnet-4-5-20250929 is deprecated, with retirement on the Claude API on November 30, 2026. The recommended replacement is claude-sonnet-5-5. Amazon Bedrock and Google Cloud set their own schedules. Effective: November 30, 2026. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers changeledger-70e85534ac3cc70e Tue, 29 Sep 2026 12:00:00 GMT Plan limits Pro 500 is a new $500/month plan that includes Ultrafast. Pro 200 is open to new subscribers again at $200, but with a lower usage allowance than before. If you had an active Pro 200 plan between Sep 22 and Sep 29 (10 a.m. PT), you keep the previous allowance through Oct 29, 2026, then move to the lower one at the same price. Effective: October 29, 2026. Source: https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers https://docs.anthropic.com/en/release-notes/api changeledger-e3a1d3bb680b8ecd Tue, 22 Sep 2026 12:00:00 GMT Price Claude Opus 5.5 has a 1M-token context window by default, 128k max output and always-on adaptive thinking. Anthropic lists it at $4 input / $20 output per million tokens, versus $5 / $25 for Claude Opus 5. Thinking can't be disabled on this model, and forced tool_choice types return a 400 error. Effective: September 22, 2026. Source: https://docs.anthropic.com/en/release-notes/api https://platform.openai.com/docs/changelog changeledger-e577dcf3547697e0 Tue, 22 Sep 2026 12:00:00 GMT Price Standard pricing for prompts up to 272K input tokens: GPT-6 Sol is $2 input, $0.20 cached input and $10 output; GPT-6 Luna is $0.10 input, $0.01 cached input and $0.50 output. For comparison, GPT-5.6 Sol was listed at $4 / $20 after an Aug 21 cut. Effective: September 22, 2026. Source: https://platform.openai.com/docs/changelog https://developers.openai.com/codex/changelog changeledger-2520d401048a9e22 Mon, 14 Sep 2026 12:00:00 GMT Shutdown OpenAI announced on Sep 14 that GPT-5.5 would retire from Codex for users signed in with ChatGPT at noon PDT on October 14, 2026. The OpenAI API and Codex sessions authenticated with an API key aren't affected. OpenAI points to GPT-6.1 Sol as the replacement; update saved model settings, custom agents, scheduled tasks and scripts that still select gpt-5.5. Effective: October 14, 2026. Source: https://developers.openai.com/codex/changelog https://ai.google.dev/gemini-api/docs/pricing changeledger-a3dac6ba1437b86b Wed, 02 Sep 2026 12:00:00 GMT Price On the paid tier, gemini-3.8-flash is $0.75 input and $3.75 output per 1M tokens through December 31, 2026, then $1.50 and $7.50 starting January 1, 2027. Google's pricing page shows the same step-up for gemini-3.6-flash. The date shown is the model's GA date; the step-up schedule is as listed on the pricing page on Oct 15. Effective: January 1, 2027. Source: https://ai.google.dev/gemini-api/docs/pricing https://platform.openai.com/docs/deprecations changeledger-2241961cb6382040 Wed, 26 Aug 2026 12:00:00 GMT Shutdown whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize and the /v1/audio/translations endpoint are deprecated. Replacements are gpt-live-transcribe or gpt-transcribe, and v1/realtime/translations for translation. Effective: February 26, 2027. Source: https://platform.openai.com/docs/deprecations https://platform.openai.com/docs/changelog changeledger-9e55132b388a387d Fri, 21 Aug 2026 12:00:00 GMT Price OpenAI lowered GPT-5.6 Sol to $4 per million input tokens and $20 per million output tokens, 20% lower on input and 33% lower on output. The promotional pricing is available at least through November 21, 2026. Effective: August 21, 2026. Source: https://platform.openai.com/docs/changelog https://docs.anthropic.com/en/release-notes/api changeledger-964b58ce4cd4b614 Mon, 10 Aug 2026 12:00:00 GMT Price Anthropic made the introductory $2 / $10 per-MTok price for Claude Sonnet 5 the standard price. The previously scheduled increase to $3 / $15 on September 1, 2026 will not occur. Effective: August 10, 2026. Source: https://docs.anthropic.com/en/release-notes/api https://platform.openai.com/docs/deprecations changeledger-6fe3d555ed02068c Thu, 11 Jun 2026 12:00:00 GMT Shutdown gpt-5-2025-08-07, gpt-5-mini-2025-08-07, gpt-5-nano-2025-08-07, gpt-5-pro-2025-10-06, o3-2025-04-16 and o3-pro-2025-06-10 are deprecated. Replacements are gpt-5.6-sol, gpt-5.6-terra or gpt-5.6-luna depending on the model (pro variants use reasoning.mode: pro). Effective: December 11, 2026. Source: https://platform.openai.com/docs/deprecations https://platform.openai.com/docs/deprecations changeledger-4abb515fc7cde760 Wed, 03 Jun 2026 12:00:00 GMT Shutdown Announced June 3: existing evals become read-only on Oct 31, 2026, and the Evals dashboard and API, Agent Builder, and the v1/prompts API (reusable prompt objects) are scheduled to shut down on Nov 30, 2026. OpenAI suggests Promptfoo for evals and the Agents SDK or ChatGPT Workspace Agents instead of Agent Builder. Effective: November 30, 2026. Source: https://platform.openai.com/docs/deprecations https://platform.openai.com/docs/deprecations changeledger-d69c968981522d7c Wed, 22 Apr 2026 12:00:00 GMT Shutdown Shutting down on October 23: gpt-3.5-turbo-0125, gpt-4-0613, gpt-4-1106-preview, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, gpt-image-1, o1-2024-12-17, o1-pro-2025-03-19, o3-mini-2025-01-31 and o4-mini-2025-04-16, plus several fine-tuned versions (ft-gpt-3.5-turbo, ft-gpt-4, ft-gpt-4.1-nano, ft-babbage-002, ft-davinci-002, ft-o4-mini). Replacements are gpt-5.6-sol, -terra or -luna depending on the model. Effective: October 23, 2026. Source: https://platform.openai.com/docs/deprecations