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Claude Fable 5.2 now available on AI Gateway

Claude Fable 5.2, designed for open-ended technical tasks, is now available on AI Gateway with improved coding, reasoning, and vision capabilities. It operates as an orchestrator or advisor, supports model fallbacks for cybersecurity classifier rejections, requires data retention (no Zero Data Retention), and can be accessed via the AI SDK, APIs, or integrated tools like Claude Code and Cursor. AI Gateway offers unified API access, cost tracking, failover options, and pricing transparency without markup.

Chat SDK agents can now stream generative UI with json-render

Vercel introduces json-render, enabling Chat SDK agents to generate and stream interactive UI components as JSON specs, which are converted into platform-native cards (e.g., Block Kit on Slack, Adaptive Cards on Teams). The system uses a typed component catalog covering tables, charts, buttons, and more, eliminating the need for separate tools. It supports streaming updates with real-time edits every 500 ms, validates component specs against schemas, and enforces platform-specific message limits to prevent content degradation.

DeepSeek V4.1 Flash 1017 Ultrafast now available on AI Gateway

DeepSeek V4.1 Flash 1017 Ultrafast, offering over 1,000 tokens per second, is now available via Fireworks' accelerated serverless endpoint on Vercel's AI Gateway. The model features a 1M-token context window and is optimized for interactive coding, reasoning, and agentic workflows. It is in public preview with no waitroom or session time limits. Developers can use it by specifying the model name in their code or through tools like Claude Code, Codex, and Cursor after setting up the latest Vercel CLI. AI Gateway provides unified API access, usage tracking, cost management, and performance optimizations without markup or platform fees.