Claude Fable 5.2
Claude Fable 5.2 takes Claude Fable 5.1's place in the picker. It's built for agentic coding, knowledge work and research, and it always thinks before it answers, adjusting how much to the task.
Reasoning through Max. Choose Adaptive, Low, Medium, High, X-High or Max. Claude Fable 5.2 has no fully-off setting, so with reasoning off it runs at Low.
Fast mode. Select the lightning control near the composer for quicker replies. Fast mode uses more of your API usage budget.
A 1-million-token context window, and it reads images and PDFs directly.
Claude Fable 5.1 is now Sunsetting. It stays selectable for now. Choose Claude Fable 5.2 for new work.
Gemini 4 Carbon and Muse Ember
Gemini 4 Carbon is Google's reasoning model for complex software engineering, sustained agentic work and cybersecurity defense. It reads images, PDFs, audio and video directly, supports Low, Medium and High reasoning effort, and sits above Gemini 4 Argon in the picker.
Muse Ember is Meta's multimodal model for conversation, reasoning and agentic work, with a Reasoning toggle. It sits below Muse Wonder and uses little of your API usage budget.
Both have a context window of about 1 million tokens.
Ultrafast
DeepSeek V4.1 Flash 1017 now has a third speed. Select the lightning control once for Fast mode, and again for Ultrafast, its quickest setting. Select it a third time to return to standard speed.
Know the cost before you send. When you choose Ultrafast, Babbily shows how many times more of your included usage it uses than standard speed.
Attachments still work. In Ultrafast, the model reads images itself. Babbily reads PDFs and other documents first and passes along what it found.
Like Fast mode, it's a setting on the model. It's hidden while Auto is selected, and switching to a different model returns to standard speed.
Video generation on Gemini Omni 1.2 Flash
The Video generation tool now uses Gemini Omni 1.2 Flash. You reach it the same way from any chat model: ask in Auto tool mode, choose Manual > Video generation, or type /create-video.
Videos with sound. Choose a length from 4 to 8 seconds and a landscape (16:9) or portrait (9:16) shape. Videos are 720p and include sound. Square videos are no longer offered.
Animate an image. Attach one image and describe how it should move.
Edit a video up to 10 seconds long. Attach one MP4 or MOV video and describe the change. The edit keeps the video's length and framing.
Also in this release
Selected tools work with Muse models. A tool you choose in the composer, such as Manual > Web search or /create-image, now works with Muse Wonder and Muse Ember.
Notifications in your language. When a chat, image or video finishes in the background, its notification now appears in the language you chose under Language in your account menu. Manage notifications.