Anthropic · Claude 5 · active
Claude Fable 5
Claude Fable 5 is Anthropic's most capable widely released model for long-running agents.
anthropic/claude-fable-5This page represents one immutable developer model ID. Serving endpoints, pricing, regions, quantizations, and service tiers attach separately and never create duplicate model records.
Provider availability
Serving endpoints and pricing
| Provider | Route model | Tier | Input | Output | Region | Observed | Source |
|---|---|---|---|---|---|---|---|
AnthropicRoute-ready | claude-fable-5 | Standard | $10.00 | $50.00 | Unknown | Aug 28, 2026 | Provider-reported |
Technical specification
Capabilities
Version lineage
Explicit unknowns
- Architecture
- Tokenizer
- Knowledge cutoff
Comparable peers
Related model comparisons
Questions
Claude Fable 5 FAQs
What is Claude Fable 5?+
Claude Fable 5 is Anthropic's most capable widely released model for long-running agents. It is developed by Anthropic and its current sourced lifecycle status is active.
What inputs and outputs does Claude Fable 5 support?+
Claude Fable 5's current record lists Text and Image as input and Text as output.
How much context does Claude Fable 5 support?+
The current record lists a 1,000,000-token context window and a maximum output of 128,000 tokens.
Is Claude Fable 5 available through an API?+
Claude Fable 5 is marked as API-available. The directly sourced provider records currently include Anthropic.
What capabilities and tasks does Claude Fable 5 support?+
Claude Fable 5's recorded capabilities are chat, generation, reasoning, and tools. Its supported tasks are image and text.
Can Claude Fable 5 be self-hosted?+
Claude Fable 5 is not marked as an open-weight model. Self-hosting is marked as unsupported, with no license recorded.
Does Claude Fable 5 have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are claude-fable-5.
Which models can Claude Fable 5 be compared with?+
The current compatible peer set includes Claude Haiku 4.5, MiniMax-M3, Mistral-Small-4-119B-2603, GPT-5.6 Luna, and GPT-5.6 Sol. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →
How current is the Model Markets record for Claude Fable 5?+
Claude Fable 5 was last verified Aug 28, 2026 from Anthropic's primary source, “Models overview | Claude Platform Docs.” The evidence is classified as official fact.
Primary evidence