Test: "Muse Wonder Full 1.0 on real work. 2 repos. 105 bugs … GPT-6 Astra (max): 45 Muse Wonder Full 1.0 (max): 44 Fable 5.1 (max): 43 Opus 5.5…
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x.com · link re-checked 2026-10-16
Claude Fable 5.1
By Anthropic. 11 results on 7 boards, copied as published. Different boards, different metrics: don't add them up.
License (as listed)Proprietary
Hosting regionNot confirmed
Boards7
Code
- 90.52%Vals AI — LiveCodeBench
Claude Fable 5.1 · Accuracy % · board #1
Vals AI implementation (no agent) · as of 2026-09-01 Stale ↗
- 57.88%Terminal-Bench 4.0
Fable 5.1 (xhigh) · Accuracy %
Claude Code · as of 2026-09-01 ↗
- 54.55%Terminal-Bench 4.0
Fable 5.1 (high) · Accuracy %
Claude Code · as of 2026-09-01 ↗
- 53.94%Terminal-Bench 4.0
Fable 5.1 (medium) · Accuracy %
Claude Code · as of 2026-09-01 ↗
- 43.33%Terminal-Bench 4.0
Fable 5.1 (low) · Accuracy %
Claude Code · as of 2026-09-01 ↗
Agentic / terminal
- 57.88%Terminal-Bench 4.0
Fable 5.1 (max) · Resolution rate
Claude Code · as of 2026-09-01 ↗
Websites
- 1742LMArena WebDev Arena
Claude Fable 5.1 (Max) · Arena score · board #5
LMArena WebDev (agentic front-end tasks) · as of 2026-10-22 ↗
- 90.26%Vals AI Vibe Code Bench v1.1
Claude Fable 5.1 · Score % · board #6
OpenHands · as of 2026-10-20 ↗
- 1326Design Arena (Fullstack)
claude-fable-5-1 · Elo · board #2
Design Arena · as of 2026-10-24 ↗
Design
- 1334Design Arena (All categories)
claude-fable-5-1 · Elo · board #11
Design Arena · as of 2026-10-24 ↗
Android
- 22.7%Android Bench 2.0 (long-horizon, 30 tasks)
Claude Fable 5.1 · Pass rate
claude-code · as of 2026-10-06 ↗
iOS
No mature public leaderboard
Available in
No plan row in our pricing data names this model version.
Use cases with this model
Same family: Claude 43
A business tycoon game "85% done … All built with Opus 5.5 + Sonnet 5.5"
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x.com · link re-checked 2026-10-16
A Picasso-style three.js Tetris; Opus 5.5 also played and recorded the game itself
DesignRead the post
x.com · link re-checked 2026-10-16
A game "in about two weeks". GPT-6.1 Sol made the assets, Opus 5.5 did "most of the coding and game logic"
CodeRead the post
x.com · link re-checked 2026-10-16
Cost (user-reported): "look what it built through the API in 3 minutes for $0.19. Claude Opus 5.5 took 15 minutes and $2.61 on the same prompt."
DesignRead the post
x.com · link re-checked 2026-10-16
Rebuilt Shopify's four AI "gates" in headless Claude Code on tinydb and measured which gates catch bugs
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dev.to · web source · link re-checked 2026-10-16
Test: "Same prompt and same references, Opus 5.5 vs Gemini 4 Argon. Opus did it in one shot. Argon got 3 rounds of feedback and still can't match…
DesignRead the post
x.com · link re-checked 2026-10-16
Sources
lmarena.ai/leaderboard/webdev vals.ai/benchmarks/vibe-code vals.ai/benchmarks/lcb developer.android.com/bench tbench.ai/leaderboard designarena.ai/leaderboard designarena.ai/leaderboard/fullstack