[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"article-claude-fable-5-mythos-5-launch-1m-context-pricing-en":3,"article-related-claude-fable-5-mythos-5-launch-1m-context-pricing-en":30,"series-model-release-9d72ed34-e7be-4628-919c-6591cad14032":75},{"id":4,"slug":5,"title":6,"content":7,"summary":8,"source":9,"source_url":10,"author":11,"image_url":12,"cover_image":12,"category":13,"language":14,"translated_content":11,"related_article_id":15,"keywords":16,"key_takeaways":22,"views":26,"created_at":27,"published_at":28,"topic_cluster_id":29},"9d72ed34-e7be-4628-919c-6591cad14032","claude-fable-5-mythos-5-launch-1m-context-pricing-en","Claude Fable 5 launches with 1M context, $10\u002F$50 pricing","\u003Cp data-speakable=\"summary\">\u003Ca href=\"\u002Ftag\u002Fanthropic\">Anthropic\u003C\u002Fa> launched Claude Fable 5 and limited-release \u003Ca href=\"\u002Ftag\u002Fclaude-mythos\">Claude Mythos\u003C\u002Fa> 5 with 1M-\u003Ca href=\"\u002Ftag\u002Ftoken\">token\u003C\u002Fa> context and new refusal handling.\u003C\u002Fp>\u003Cp>Anthropic has introduced \u003Ca href=\"https:\u002F\u002Fplatform.claude.com\u002Fdocs\u002Fen\u002Fabout-claude\u002Fmodels\u002Fintroducing-claude-fable-5-and-claude-mythos-5\" target=\"_blank\" rel=\"noopener\">Claude Fable 5\u003C\u002Fa> and \u003Ca href=\"https:\u002F\u002Fplatform.claude.com\u002Fdocs\u002Fen\u002Fabout-claude\u002Fmodels\u002Fintroducing-claude-fable-5-and-claude-mythos-5\" target=\"_blank\" rel=\"noopener\">Claude Mythos 5\u003C\u002Fa>, with both models set to become available on June 9, 2026. Fable 5 is the broadly released model; Mythos 5 is limited to approved customers through Project Glasswing.\u003C\u002Fp>\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>項目\u003C\u002Fth>\u003Cth>數值\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Launch date\u003C\u002Ftd>\u003Ctd>June 9, 2026\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Context window\u003C\u002Ftd>\u003Ctd>1M tokens\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Max output\u003C\u002Ftd>\u003Ctd>128k tokens per request\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Input pricing\u003C\u002Ftd>\u003Ctd>$10 per million tokens\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Output pricing\u003C\u002Ftd>\u003Ctd>$50 per million tokens\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003Ch2>What changed\u003C\u002Fh2>\u003Cp>\u003Ca href=\"\u002Ftag\u002Fclaude\">Claude\u003C\u002Fa> Fable 5 is Anthropic’s most capable widely released model, aimed at long-horizon reasoning and agentic workloads. Claude Mythos 5 shares the same capabilities, specs, and pricing, but it is not generally available.\u003C\u002Fp>\n\u003Cfigure class=\"my-6\">\u003Cimg src=\"https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782518558846-6mxu.png\" alt=\"Claude Fable 5 launches with 1M context, $10\u002F$50 pricing\" class=\"rounded-xl w-full\" loading=\"lazy\" \u002F>\u003C\u002Ffigure>\n\u003Cp>The biggest integration change is that Fable 5 can refuse requests using safety classifiers. In the Messages API, a refusal returns \u003Ccode>stop_reason: \"refusal\"\u003C\u002Fcode> with HTTP 200, so teams must treat it as a valid response path rather than an error.\u003C\u002Fp>\u003Cul>\u003Cli>Fable 5: generally available on the Claude API, Claude Platform on AWS, Amazon Bedrock, Google Cloud, and Microsoft Foundry\u003C\u002Fli>\u003Cli>Mythos 5: limited availability through Project Glasswing\u003C\u002Fli>\u003Cli>Both models: 1M-token default context window and up to 128k output tokens\u003C\u002Fli>\u003Cli>Pricing: $10 per million input tokens and $50 per million output tokens\u003C\u002Fli>\u003C\u002Ful>\u003Cp>Anthropic also changed how thinking works. Adaptive thinking is always on, \u003Ccode>thinking: {\"type\":\"disabled\"}\u003C\u002Fcode> is not supported, and developers use the \u003Ccode>effort\u003C\u002Fcode> parameter to control depth.\u003C\u002Fp>\u003Cp>Raw chain-of-thought is never returned. Instead, the \u003Ccode>thinking.display\u003C\u002Fcode> setting can return summarized thinking blocks or omit them entirely, and multi-turn chats must pass those thinking blocks back unchanged when staying on the same model.\u003C\u002Fp>\u003Ch2>Why it matters\u003C\u002Fh2>\u003Cp>For developers, the new refusal flow changes error handling, retry logic, and billing checks. Anthropic says refused requests are not billed before output generation, and fallback retries can recover prompt-cache costs so teams do not pay twice when switching models.\u003C\u002Fp>\n\u003Cfigure class=\"my-6\">\u003Cimg src=\"https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782518554074-lr2k.png\" alt=\"Claude Fable 5 launches with 1M context, $10\u002F$50 pricing\" class=\"rounded-xl w-full\" loading=\"lazy\" \u002F>\u003C\u002Ffigure>\n\u003Cp>The supported feature set is also broad at launch: effort, task budgets, memory tool, code execution, programmatic tool calling, context-editing result clearing, compaction, and vision. That makes Fable 5 a practical upgrade path for \u003Ca href=\"\u002Ftag\u002Fagent\">agent\u003C\u002Fa> builders that need longer context and more controlled reasoning.\u003C\u002Fp>\u003Cp>Access and compliance are also part of the rollout. Both models carry 30-day data retention and are not available under zero data retention, which matters for teams with stricter storage rules.\u003C\u002Fp>\u003Cp>The key question for adopters is not whether the models are faster or larger, but how much application logic needs to change to handle refusals, fallback, and hidden reasoning correctly.\u003C\u002Fp>","Anthropic adds Claude Fable 5 and limited-release Claude Mythos 5, both with 1M-token context, 128k output, and new refusal handling.","platform.claude.com","https:\u002F\u002Fplatform.claude.com\u002Fdocs\u002Fen\u002Fabout-claude\u002Fmodels\u002Fintroducing-claude-fable-5-and-claude-mythos-5",null,"https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782518558846-6mxu.png","model-release","en","b4235bcf-4a42-4316-9b4c-2c32107a19f8",[17,18,19,20,21],"Anthropic","Claude Fable 5","Claude Mythos 5","1M context","refusal handling",[23,24,25],"Claude Fable 5 launches generally available on June 9, 2026; Mythos 5 is limited release.","Both models offer 1M-token context, 128k output, and $10\u002F$50 pricing.","Fable 5 adds refusal handling, fallback options, and always-on adaptive thinking.",2,"2026-06-27T00:02:13.485542+00:00","2026-06-27T00:02:13.482+00:00","1bae1133-d241-4581-9332-fbf39690c319",{"tags":31,"relatedLang":34,"relatedPosts":38},[32],{"name":17,"slug":33},"anthropic",{"id":15,"slug":35,"title":36,"language":37},"claude-fable-5-mythos-5-launch-1m-context-pricing-zh","Claude Fable 5 上線：1M 上下文、$10\u002F$50","zh",[39,45,51,57,63,69],{"id":40,"slug":41,"title":42,"cover_image":43,"image_url":43,"created_at":44,"category":13},"cdd8e455-ff2d-41a2-b049-61f96d568b32","ubuntu-2610-snapshot-2-gnome-50-kernel-70-en","Ubuntu 26.10 Snapshot 2 adds GNOME 50 and kernel 7.0","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782536575781-39jk.png","2026-06-27T05:02:31.246533+00:00",{"id":46,"slug":47,"title":48,"cover_image":49,"image_url":49,"created_at":50,"category":13},"15ededcb-01f7-408c-a9ad-cd71712b010b","google-gemini-35-pro-july-release-delay-en","Google Pushes Gemini 3.5 Pro to July","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782439377509-lxcl.png","2026-06-26T02:02:28.584771+00:00",{"id":52,"slug":53,"title":54,"cover_image":55,"image_url":55,"created_at":56,"category":13},"e2fba7a9-2402-4f7b-b553-4fc46c6389c6","gemini-3-5-flash-computer-use-default-en","Gemini 3.5 Flash makes computer use a default, not a demo","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782438471251-7rbt.png","2026-06-26T01:47:20.755162+00:00",{"id":58,"slug":59,"title":60,"cover_image":61,"image_url":61,"created_at":62,"category":13},"ab56297f-48e1-40a8-b00a-b70f584d6543","xiaomi-mimo-v2-5-pro-pricing-benchmarks-limits-en","Xiaomi MiMo-V2.5-Pro: pricing, benchmarks, and limits","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782418676669-calb.png","2026-06-25T20:17:35.974656+00:00",{"id":64,"slug":65,"title":66,"cover_image":67,"image_url":67,"created_at":68,"category":13},"9736a608-9aac-42b8-912a-94ceb2944a84","openai-sora-hardware-enterprise-video-en","OpenAI’s Sora hardware targets enterprise video","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782382685120-i4ci.png","2026-06-25T10:17:39.504946+00:00",{"id":70,"slug":71,"title":72,"cover_image":73,"image_url":73,"created_at":74,"category":13},"7fa092e5-5be7-41b6-bb60-2792c0a79fac","gpt-56-rumors-2m-context-coding-gains-en","GPT-5.6 rumors point to 2M context and coding gains","https:\u002F\u002Fxxdpdyhzhpamafnrdkyq.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Fcovers\u002Finline-1782248567152-pbak.png","2026-06-23T21:02:23.553973+00:00",[76,81,86,91,96,101,106,111,116,121],{"id":77,"slug":78,"title":79,"created_at":80},"d4cffde7-9b50-4cc7-bb68-8bc9e3b15477","nvidia-rubin-ai-supercomputer-en","NVIDIA Unveils Rubin: A Leap in AI Supercomputing","2026-03-25T16:24:35.155565+00:00",{"id":82,"slug":83,"title":84,"created_at":85},"eab919b9-fbac-4048-89fc-afad6749ccef","google-gemini-ai-innovations-2026-en","Google's AI Leap with Gemini 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Pricing","2026-03-26T01:25:36.387587+00:00",{"id":107,"slug":108,"title":109,"created_at":110},"bf36bb9e-3444-4fb8-ab19-0df6bc9d8271","rag-2026-indispensable-ai-bridge-en","RAG in 2026: The Indispensable AI Bridge","2026-03-26T01:28:34.472046+00:00",{"id":112,"slug":113,"title":114,"created_at":115},"60881d6d-2310-44ef-b1fb-7f98e9dd2f0e","xiaomi-mimo-trio-agents-robots-voice-en","Xiaomi’s MiMo trio targets agents, robots, and voice","2026-03-28T03:05:08.899895+00:00",{"id":117,"slug":118,"title":119,"created_at":120},"f063d8d1-41d1-4de4-8ebc-6c40511b9369","xiaomi-mimo-v2-pro-1t-moe-agents-en","Xiaomi MiMo-V2-Pro: 1T MoE Model for Agents","2026-03-28T03:06:19.238032+00:00",{"id":122,"slug":123,"title":124,"created_at":125},"a1379e9a-6785-4ff5-9b0a-8cff55f8264f","cursor-composer-2-started-from-kimi-en","Cursor’s Composer 2 started from Kimi","2026-03-28T03:11:59.132398+00:00"]