Anthropic | Claude Fable 5.1
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
Good
Usable with some limitations.
Strengths
- Maintains doctrinal fidelity
- Affirms Christian worldview
- Excellent at 1.3. Apologetics
- Excellent at 1.5. Intercessory Prayer
- Excellent at 2.1. Exclusivity of Jesus
Weaknesses
- Struggles with 3.1. Existence of God
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
Anthropic
anthropic/claude-fable-5.1
2
Categories
Recent Tests
| Date | Score | Version | Tier 1 (Task) | Tier 2 (Gospel) | Tier 3 (Worldview) | Trust Tier |
|---|---|---|---|---|---|---|
| 9/2/2026 | 75.7 | 1.0.0 | 74.3 | 75.0 | 86.7 | automated |
| 9/2/2026 | 75.7 | 1.0.0 | 74.3 | 75.0 | 86.7 | automated |