BEGIN:VCALENDAR VERSION:2.0 PRODID:-//AI Wiki//Model Deprecations//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:AI model retirements (aiwiki.ai) X-WR-CALDESC:Confirmed AI model retirement dates from the AI Wiki model lif ecycle registry. CC BY 4.0. BEGIN:VEVENT UID:gpt-4@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: GPT-4 (OpenAI) DESCRIPTION:Confirmed retirement date for GPT-4 (gpt-4). Replacement: GPT-5 .6 Sol (gpt-5.6-sol). Re-evaluate prompts and tool schemas on GPT-5.6 Sol\ , then replace every GPT-4 snapshot and Completions alias before shutdown. Source: https://developers.openai.com/api/docs/deprecations Details: http s://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:gpt-4-turbo@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: GPT-4 Turbo (OpenAI) DESCRIPTION:Confirmed retirement date for GPT-4 Turbo (gpt-4-turbo). Replac ement: GPT-5.6 Sol (gpt-5.6-sol). Benchmark long prompts and multimodal in puts on GPT-5.6 Sol\, then move both the rolling alias and dated snapshot. Source: https://developers.openai.com/api/docs/deprecations Details: http s://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:gpt-4o@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: GPT-4o (OpenAI) DESCRIPTION:Confirmed retirement date for GPT-4o (gpt-4o). Replacement: GPT -5.6 Sol (gpt-5.6-sol). Re-test multimodal prompts\, tool schemas\, and la tency assumptions on GPT-5.6 Sol before the October 23\, 2026 shutdown. So urce: https://developers.openai.com/api/docs/deprecations Details: https:/ /aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:gpt-3.5-turbo@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: GPT-3.5 Turbo (OpenAI) DESCRIPTION:Confirmed retirement date for GPT-3.5 Turbo (gpt-3.5-turbo). Re placement: GPT-5.6 Terra (gpt-5.6-terra). Run representative low-latency a nd high-volume evaluations on Terra and update legacy Chat Completions ass umptions. Source: https://developers.openai.com/api/docs/deprecations Deta ils: https://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:o1@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: OpenAI o1 (OpenAI) DESCRIPTION:Confirmed retirement date for OpenAI o1 (o1). Replacement: GPT- 5.6 Sol (gpt-5.6-sol). Re-test reasoning effort\, token budgets\, and tool behavior on Sol before changing the production model ID. Source: https:// developers.openai.com/api/docs/deprecations Details: https://aiwiki.ai/too ls/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:o1-pro@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: OpenAI o1-pro (OpenAI) DESCRIPTION:Confirmed retirement date for OpenAI o1-pro (o1-pro). Replaceme nt: GPT-5.6 Sol (gpt-5.6-sol). OpenAI's documented migration is gpt-5.6-so l with reasoning.mode set to pro\; re-test reasoning workloads and budgets before cutover. Source: https://developers.openai.com/api/docs/deprecatio ns Details: https://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:o3-mini@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: OpenAI o3-mini (OpenAI) DESCRIPTION:Confirmed retirement date for OpenAI o3-mini (o3-mini). Replace ment: GPT-5.6 Sol (gpt-5.6-sol). Validate reasoning-intensive workloads on Sol and account for its different price and latency profile. Source: http s://developers.openai.com/api/docs/deprecations Details: https://aiwiki.ai /tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:o4-mini@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20261023 DTEND;VALUE=DATE:20261024 SUMMARY:Retirement: OpenAI o4-mini (OpenAI) DESCRIPTION:Confirmed retirement date for OpenAI o4-mini (o4-mini). Replace ment: GPT-5.6 Terra (gpt-5.6-terra). Test Terra with the same tools and re asoning workloads\; check quality\, latency\, and token use before cutover . Source: https://developers.openai.com/api/docs/deprecations Details: htt ps://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:o1-mini@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20251027 DTEND;VALUE=DATE:20251028 SUMMARY:Retirement: OpenAI o1-mini (OpenAI) DESCRIPTION:Confirmed retirement date for OpenAI o1-mini (o1-mini). Replace ment: OpenAI o4-mini (o4-mini). OpenAI's documented replacement at shutdow n was o4-mini\, itself now deprecated with an October 23\, 2026 shutdown\; new work belongs on the GPT-5.6 family. Source: https://developers.openai .com/api/docs/deprecations Details: https://aiwiki.ai/tools/model_deprecat ions URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:gpt-4-32k@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20250606 DTEND;VALUE=DATE:20250607 SUMMARY:Retirement: GPT-4 32K (OpenAI) DESCRIPTION:Confirmed retirement date for GPT-4 32K (gpt-4-32k). Replacemen t: GPT-4o (gpt-4o). OpenAI pointed gpt-4-32k users to gpt-4o\, which is it self deprecated with an October 23\, 2026 shutdown\; new work belongs on t he GPT-5.6 family. Source: https://developers.openai.com/api/docs/deprecat ions Details: https://aiwiki.ai/tools/model_deprecations URL:https://developers.openai.com/api/docs/deprecations END:VEVENT BEGIN:VEVENT UID:claude-mythos-preview@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20260721 DTEND;VALUE=DATE:20260722 SUMMARY:Retirement: Claude Mythos Preview (Anthropic) DESCRIPTION:Confirmed retirement date for Claude Mythos Preview (claude-myt hos-preview). Replacement: Claude Mythos 5 (claude-mythos-5). Anthropic's documented migration target is Claude Mythos 5\, which requires Project Gl asswing approval. Source: https://platform.claude.com/docs/en/about-claude /model-deprecations Details: https://aiwiki.ai/tools/model_deprecations URL:https://platform.claude.com/docs/en/about-claude/model-deprecations END:VEVENT BEGIN:VEVENT UID:claude-opus-4-1-20250805@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20260805 DTEND;VALUE=DATE:20260806 SUMMARY:Retirement: Claude Opus 4.1 (Anthropic) DESCRIPTION:Confirmed retirement date for Claude Opus 4.1 (claude-opus-4-1- 20250805). Replacement: Claude Opus 4.8 (claude-opus-4-8). Audit every dat ed ID and alias\, then test prompting\, tool calls\, effort settings\, out put length\, and tokenization on Opus 4.8. Source: https://platform.claude .com/docs/en/about-claude/model-deprecations Details: https://aiwiki.ai/to ols/model_deprecations URL:https://platform.claude.com/docs/en/about-claude/model-deprecations END:VEVENT BEGIN:VEVENT UID:claude-opus-4-20250514@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20260615 DTEND;VALUE=DATE:20260616 SUMMARY:Retirement: Claude Opus 4 (Anthropic) DESCRIPTION:Confirmed retirement date for Claude Opus 4 (claude-opus-4-2025 0514). Replacement: Claude Opus 4.8 (claude-opus-4-8). Anthropic's documen ted replacement is Claude Opus 4.8\; requests to the retired ID now return an error on Anthropic-operated platforms. Source: https://platform.claude .com/docs/en/about-claude/model-deprecations Details: https://aiwiki.ai/to ols/model_deprecations URL:https://platform.claude.com/docs/en/about-claude/model-deprecations END:VEVENT BEGIN:VEVENT UID:deepseek-chat@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20260724 DTEND;VALUE=DATE:20260725 SUMMARY:Retirement: deepseek-chat (legacy alias) (DeepSeek) DESCRIPTION:Confirmed retirement date for deepseek-chat (legacy alias) (dee pseek-chat). Replacement: DeepSeek-V4-Flash (deepseek-v4-flash). Point API calls at deepseek-v4-flash\; its non-thinking mode matches the old deepse ek-chat behavior. Source: https://api-docs.deepseek.com/quick_start/pricin g Details: https://aiwiki.ai/tools/model_deprecations URL:https://api-docs.deepseek.com/quick_start/pricing END:VEVENT BEGIN:VEVENT UID:deepseek-reasoner@aiwiki.ai DTSTAMP:20260723T000000Z DTSTART;VALUE=DATE:20260724 DTEND;VALUE=DATE:20260725 SUMMARY:Retirement: deepseek-reasoner (legacy alias) (DeepSeek) DESCRIPTION:Confirmed retirement date for deepseek-reasoner (legacy alias) (deepseek-reasoner). Replacement: DeepSeek-V4-Flash (deepseek-v4-flash). P oint API calls at deepseek-v4-flash\; its thinking mode matches the old de epseek-reasoner behavior. Source: https://api-docs.deepseek.com/quick_star t/pricing Details: https://aiwiki.ai/tools/model_deprecations URL:https://api-docs.deepseek.com/quick_start/pricing END:VEVENT END:VCALENDAR