API & MCP change feed

Coming up

• Oct 23, 2026
  OpenAI Breaking model Old GPT-3.5/4/o-series snapshots shut down October 23, 2026, including the bare aliases gpt-4, gpt-3.5-turbo, o1, o3-mini, o4-mini
• Nov 30, 2026
  OpenAI Breaking rest OpenAI reusable prompt objects and the v1/prompts API shut down November 30, 2026
• Mar 1, 2027
  Atlassian Rovo MCP Breaking mcp On Mar 1, 2027 every v1 Rovo MCP connection starts exposing the v2 tools; v2 is GA now at /v2/mcp

In effect

• Sep 24, 2026
  OpenAI Breaking rest OpenAI Videos API and all Sora 2 models shut down September 24, 2026, with no replacement
• Sep 22, 2026
  Atlassian Rovo MCP Breaking mcp Rovo MCP renamed findJiraIssueAssignableUsers to listJiraIssueAssignableUsers
• Sep 17, 2026
  Notion MCP Silent mcp Search calls with filters the plan doesn't include now return broader results instead of a validation_error
• Sep 2, 2026
  Notion MCP Silent mcp notion-search became keyword-only and stopped searching connected apps; semantic search moved to a new notion-ai-search tool; partly reversed Sep 10 for connections that can use AI search
• Aug 31, 2026
  Greenhouse Breaking rest Harvest v1/v2 removed on August 31, 2026; integrations must be on v3 (OAuth + cursor pagination)
• Aug 25, 2026
  Notion MCP Breaking mcp notion-update-page update_content batches are now all-or-nothing; calls that used to partly succeed now fail
• Aug 17, 2026
  Google Breaking model Imagen 4 (standard, Ultra, Fast) shut down on the Gemini API August 17, 2026; replacement is a Gemini image model
• Aug 13, 2026
  Notion MCP Deprecation mcp notion-query-database-view no longer appears in tools/list; still callable for now, with removal announced
• Aug 5, 2026
  Anthropic Breaking model Claude Opus 4.1 retired on the Claude API; requests to it now fail
• Aug 1, 2026
  Twilio Silent rest conference_participant removed from Voice Insights Call Summary on August 1, 2026; all calls now return attributes: null
• Jul 28, 2026
  MCP specification Deprecation mcp MCP 2026-07-28 removes the initialize handshake and Mcp-Session-Id, and deprecates Roots, Sampling, Logging, and the HTTP+SSE transport
• Jul 23, 2026
  OpenAI Breaking model 14 OpenAI models shut down July 23, 2026, including gpt-5-chat-latest and the gpt-5, gpt-5.1 and gpt-5.2 codex models
• Jun 15, 2026
  Anthropic Breaking model Claude Opus 4 and Sonnet 4 retired on the Claude API; requests to them now fail
• Jun 1, 2026
  Google Breaking model Gemini 2.0 Flash and Flash-Lite shut down on the Gemini API June 1, 2026
• May 27, 2026
  Atlassian Rovo MCP Breaking mcp Rovo MCP switched OAuth servers on May 27, 2026; clients that cache client_id or the auth discovery document may start to fail
• May 15, 2026
  xAI Silent model Retired Grok slugs still resolve but redirect to other models, so the model served and the bill change silently
• Apr 20, 2026
  Anthropic Breaking model Claude Haiku 3 retired on the Claude API; requests to it now fail
• Apr 20, 2026
  Notion Silent rest Data source and view queries stop paginating at 10,000 results; start_cursor may now be an opaque string instead of a UUID
• Mar 26, 2026
  Stripe Silent sdk stripe-python v15 and stripe-node v21 return unit_amount_decimal and other decimal_string fields as Decimal, not string; string equality checks silently go false
• Feb 19, 2026
  Anthropic Breaking model Claude Sonnet 3.7 and Haiku 3.5 retired on the Claude API; requests to them now fail
• Jan 26, 2026
  GitHub MCP Server Breaking mcp GitHub MCP server replaced its individual Actions and Projects tools with consolidated read/write tools; old names only survive as config aliases
• Jan 14, 2026
  Google Breaking model text-embedding-004 shut down on the Gemini API January 14, 2026; replacement is gemini-embedding-2

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