Claude Fable 5 Sweeps Arena Leaderboards Across Multiple Categories

Arena

Jun 13, 2026

Arena.ai reports Claude Fable 5 now ranks first in Code Arena: Frontend, winning 72% of battles with a 98-point lead, and first in Text Arena. The model also secured second place in Vision Arena. These rankings follow the model's recent top performance in the Agent Arena, where it outperformed other frontier models by the widest margin recorded on the platform.

Code Arena: Frontend
Claude Fable 5: Ranked #1
1 Claude Fable 5 1,664
2 Claude Opus 4.7 (Thinking) 1,566
3 Claude Opus 4.8 (Thinking) 1,558
4 Claude Opus 4.7 1,556
5 Claude Opus 4.8 1,544
6 Claude Opus 4.6 (Thinking) 1,542
7 Claude Opus 4.6 1,539
8 Qwen-3.7 Max 1,534
9 GLM-5.1 1,532
10 Claude Sonnet 4.6 1,522
11 MiniMax-M3 1,521
12 Kimi-K2.6 1,515
13 Muse Spark 1,508
14 Gemini-3.5 Flash 1,506
15 GPT-5.5 xHigh 1,501
SOURCE: ARENA AI LEADERBOARD (ARENA.AI/LEADERBOARD/CODE)
NOTE: ARENA SCORE — Claude Fable 5 secures the top position on the Code Arena leaderboard with an Elo score of 1,664.

View the full update on arena.ai

Arena.ai

@arena3d ago

Claude Fable 5 ranks #1 in Code Arena: Frontend, leading by a wide margin over Opus-4.8. Highlights: - #1 in every sub leaderboard: HTML, React - #1 in every sub category: Brand & Marketing, Reference-Based Design, Data & Analytics, Consumer Product, Gaming, Simulations, and Content Creation Tools. Huge congrats to @AnthropicAI for this milestone! The thread breaks down how Claude Fable 5 ranks across single-modality arenas.

2432.7k

View on X

Every HeadsUpAI update is written based on its original source and reviewed before it's published. Read our editorial standards →

Keep reading

Claude Fable 5 Ranks First on Arena Agentic Task Leaderboard

Arena.ai ranks Anthropic's Claude Fable 5 first on its Agent Arena leaderboard with an 11.2% net improvement. The model leads in confirmed task success and user praise, though it ranks 17th in steerability. It outperforms Opus-4.8 and GPT-5.5 by the widest margin recorded on the platform, demonstrating high capability for complex, multi-step agentic workflows.

Cursor Adds Claude Fable 5, Sets New Coding Benchmark Record

Cursor4d ago

Cursor Adds Claude Fable 5, Sets New Coding Benchmark Record

Cursor, an AI-first code editor, has made Anthropic's Claude Fable 5 model available within its platform. The model achieved a new state of the art on CursorBench 3.1 with a score of 72.9%, surpassing the previous best by 8 points. This update signifies a notable improvement in AI coding capabilities for complex development tasks.

Warp4d ago

Warp Adds Claude Fable 5 for Goal-Oriented Agentic Development

Warp has integrated Anthropic's Claude Fable 5 model into its agentic development environment. This provides developers with a model capable of Mythos-level performance for autonomous, goal-oriented tasks, enhancing multi-step agent workflows.

Anthropic Releases Claude Fable 5, Tops Agentic Work Benchmark with Safeguards

Artificial Analysis4d ago

Anthropic Releases Claude Fable 5, Tops Agentic Work Benchmark with Safeguards

Anthropic has released Claude Fable 5, its first publicly available Mythos-class model, which ranks #1 on Artificial Analysis's GDPval-AA benchmark. This model includes new security guardrails for high-risk domains and a fallback mechanism to Claude Opus 4.8, setting a new standard for capable and responsibly scaled AI.