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Claude Fable 5, Reve Image Gen & More New Models

Anthropic's next-generation Claude Fable 5 lands with 1M context, Reve joins as a new image provider, xAI's Grok Imagine Video 1.5 turns images into 15-second clips, and NVIDIA's Nemotron 3 Ultra 550B arrives.

Claude Fable 5, Reve, Grok Imagine Video and Nemotron 3 Ultra joining LLM Gateway

Four new arrivals this week — a next-generation frontier model, a new image provider, an image-to-video model, and NVIDIA's biggest open model yet.

Claude Fable 5

Anthropic's next-generation model for knowledge work and coding is live:

1anthropic/claude-fable-5
  • 1,000,000 token context, up to 128K output tokens
  • Adaptive reasoning, vision, tool use, and structured JSON output
  • Prompt caching with 5-minute and 1-hour cache writes
  • $10 / 1M input · $50 / 1M output · $1 / 1M cached reads

Reve Create — New Image Provider

Reve joins the gateway as a new image generation provider. reve/reve-create produces high-quality images with native 4K resolution at a flat $0.024 per image — works in the Image Studio and through /v1/chat/completions like every other image model.

Grok Imagine Video 1.5 Preview

xAI's image-to-video model is available as xai/grok-imagine-video-1-5-preview:

  • Turns an input image into video clips of 6 to 15 seconds, with audio
  • Resolutions from 480p up to 1080p
  • $0.08/s at 480p, $0.14/s at 720p+, plus $0.01 per input image
  • Try it in the Video Studio

Nemotron 3 Ultra 550B

NVIDIA's most capable open model — 550B parameters for complex reasoning, coding, and multimodal tasks:

1deepinfra/nemotron-3-ultra-550b
  • 262K context with vision, tools, and JSON output
  • $0.50 / 1M input · $2.50 / 1M output · cached reads at $0.15 / 1M

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