AI Model Profile
Claude Fable 5
Claude Fable 5 is Anthropic's most capable widely released model, listed for demanding reasoning and long-horizon agentic work.
- Family
- Claude
- Release date
- 2026-06-09
- Status
- Current
- Context window
- 1M tokens
- Output limit
- 128K tokens
- API
- yes
- Open weights
- no
- Local/self-hosted
- no
- Pricing
- Claude Fable 5: $10 per million input tokens and $50 per million output tokens on the Claude API, before cache, batch or platform-specific adjustments.
- Evidence state
- Source-verified
Verification & Sources
- Evidence state
- Source-verified
- Source links
- 5
- Freshness
- Checked July 28, 2026
- Last verified
- July 28, 2026
- Last updated
- July 28, 2026
What this evidence state means
- Definition
- The stated claim was checked against a named primary or authoritative source. This does not mean Kingy tested the product.
- Required provenance
- At least one public, named primary or authoritative source that directly supports the claim.
- Owner
- Kingy editorial reviewer
- Freshness rule
- Recheck within 30 days and after a material product, price, access, or source change.
- Disputes and corrections
- Use “Suggest a correction” on the record. Kingy editorial reviews the cited evidence, records material corrections, and changes or removes the state when it is not supported.
Key source checks
Suggest a correction
Benchmark Caveat
Benchmarks and provider capability notes are directional, not universal rankings. Results can shift with prompts, tool use, latency targets, pricing tier, safety filters, context length, and the workload mix a real team runs.
See the linked official model, docs, model-card, or pricing source for provider-published capability notes.
Best for
Teams that need Anthropic's highest generally available Claude capability for long-horizon agentic and professional workflows.
Skip if
Skip if Sonnet/Haiku tiers meet the task at lower cost or if open weights are required.
Strengths
Anthropic lists Fable 5 with 1M context, 128k max output, and availability across major Claude surfaces.
Weaknesses
High-end Claude usage requires careful cost controls, prompt caching strategy, and model-specific evals.
Agent suitability
Useful for agent workflows when the provider supports tool use, long context, structured outputs, or workflow-specific APIs.
Kingy AI take
Use this as a source-backed shortlist candidate, not a universal ranking. Re-check official provider docs and run a task-specific trial before production adoption.
Full Model Notes
Claude Fable 5 is Anthropic’s most capable widely released model, listed for demanding reasoning and long-horizon agentic work.
The Kingy Brief
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Coding notes
Use official docs and live evals before selecting this model for production coding workflows.
Reasoning notes
Provider capability notes are useful but should be validated on representative prompts and tools.
Creative notes
Use a small creative test set before standardizing outputs for brand, media, or customer-facing work.
Research notes
Track release notes and model lifecycle notices because availability and aliases can change.
License notes
Commercial/API terms apply unless the linked official source states otherwise.
Hardware requirements
Cloud/API model; local hardware requirements are not published as a self-hosted path.
Official Model Links
Model Intelligence Research Map
Use these internal paths to move from this model profile into provider pages, static comparison pages, related Kingy records, and the broader AI launch graph. These are research paths, not rankings.