LLM
Legacy
Proprietary
Claude Fable 5
Existing Fable 5 integrations (migrate to Fable 5.1)
Release2026-06-09
Context1M
Max output128,000 tokens
ParametersUndisclosed
Local / VRAMAPI only
LicenseProprietary
Overview
Claude Fable 5 is a model in the LLM category from Anthropic. It was released in 2026-06-09. The vendor is based in US. Best for: Existing Fable 5 integrations (migrate to Fable 5.1).
Notes: Released together with Mythos 5. Access was suspended 2026-06-12 to 2026-06-30 under U.S. export controls and restored 2026-07-01. Not retired before 2027-06-09. Context/output assumed identical to Mythos 5; verify.
Strengths
- First public Mythos-class model
- Frontier coding and agentic work
- 1M context
Limits
- Superseded by Fable 5.1
- High price
- Safeguards downgrade some high-risk requests
Specifications
| Vendor | Anthropic |
|---|---|
| Category | LLM |
| Release | 2026-06-09 |
| Status | Legacy |
| License | Proprietary |
| Commercial use | Not specified |
| Context window | 1M |
| Max output tokens | 128,000 |
| Input modalities | Text, Image |
| Output modalities | Text |
| Prompt types | Text |
| Negative prompts | No |
| Max outputs | 1 |
| Local deployment | No |
| API access | Yes |
| Pricing | $10 / $50 per 1M token (cache reads $1.00) |
| Confidence | Medium |
| Vendor country | US |
| Vendor type | Frontier lab |
Pricing & hardware
$10 / $50 per 1M token (cache reads $1.00)
API-only: local GPU memory is not applicable. API access is available.