Claude Fable 5.5
A new checkpoint model in Anthropic's Claude series, featuring strong code generation capabilities, including the ability to generate complex SVG graphics and playable game code in a single pass.
Timeline (last 90 days)
According to a leak by Testing Catalog, Anthropic partners have obtained access to Claude Fable 5.5, which is expected to be released next week; traces of Fable 5.5 have also appeared in the Microsoft Azure catalog and in LightLM.
On Voxelbench, Claude Fable 5.5 built a complete explorable 3D world including lighting, interconnected environments and spatial relationships, using just a single prompt requesting voxel art.
Running at medium effort through Claude Next routing, Fable 5.5 generated, from a single HTML file prompt, an interactive Minecraft clone world that includes sand physically falling, torches extinguishing underwater, trees falling, and wind-sound background music.
Fable 5.5 once appeared in Microsoft Azure's model list, indicating that Anthropic may be preparing to release the model.
A leaker claims that Anthropic partners have recently been granted access to Fable 5.5, speculating that the model may be released next week.
According to leaks, Claude Fable 5.5 appears in the Microsoft Foundry automatic list, with the ID attributed to Microsoft, and a separate lightweight LLM entry was found in Azure infrastructure, possibly launching before the end of this weekend.
Anthropic may release Claude Fable 5.5 earlier than expected; the model was discovered through an automated TrueFoundry model listing, and related entries were found on Microsoft Azure infrastructure, suggesting it may already be deployed behind the scenes.
Claude Fable 5 appears in the configurations of multiple IDEs and is being integrated into more development toolchains.
A user generated SVGs of both the PlayStation 5 and PlayStation 4 controllers in a single attempt using Claude Fable 5.5.
There are rumors that Anthropic started a brand-new pretraining run about a week ago, targeting a next-generation model larger than Claude Fable 5.5.
All Facts (10)
On Voxelbench, Claude Fable 5.5 built a complete explorable 3D world including lighting, interconnected environments and spatial relationships, using just a single prompt requesting voxel art.
50%UnverifiedFable 5.5 once appeared in Microsoft Azure's model list, indicating that Anthropic may be preparing to release the model.
50%UnverifiedRunning at medium effort through Claude Next routing, Fable 5.5 generated, from a single HTML file prompt, an interactive Minecraft clone world that includes sand physically falling, torches extinguishing underwater, trees falling, and wind-sound background music.
50%UnverifiedClaude Fable 5 appears in the configurations of multiple IDEs and is being integrated into more development toolchains.
50%UnverifiedA user generated SVGs of both the PlayStation 5 and PlayStation 4 controllers in a single attempt using Claude Fable 5.5.
50%UnverifiedThere are rumors that Anthropic started a brand-new pretraining run about a week ago, targeting a next-generation model larger than Claude Fable 5.5.
50%UnverifiedAccording to a leak by Testing Catalog, Anthropic partners have obtained access to Claude Fable 5.5, which is expected to be released next week; traces of Fable 5.5 have also appeared in the Microsoft Azure catalog and in LightLM.
50%UnverifiedA leaker claims that Anthropic partners have recently been granted access to Fable 5.5, speculating that the model may be released next week.
50%UnverifiedAccording to leaks, Claude Fable 5.5 appears in the Microsoft Foundry automatic list, with the ID attributed to Microsoft, and a separate lightweight LLM entry was found in Azure infrastructure, possibly launching before the end of this weekend.
50%UnverifiedAnthropic may release Claude Fable 5.5 earlier than expected; the model was discovered through an automated TrueFoundry model listing, and related entries were found on Microsoft Azure infrastructure, suggesting it may already be deployed behind the scenes.
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