Performance Benchmarks for Claude Fable 5.2 (xHigh)

Analyze how Claude Fable 5.2 (xHigh) stacks up against other frontier models in terms of cost-to-performance and raw intelligence (LMArena Elo).

2026 Performance Summary

🚀 Intelligence (Elo): 1836
💰 API Cost (Input): $0.000008 / 1M tokens
⚡ API Cost (Output): $0.00004 / 1M tokens
⏱️ Real-world Throughput: 79 tokens/s

Analysis: Claude Fable 5.2 (xHigh) is currently positioned on the Pareto Frontier. This means it offers a unique and optimal balance between intelligence (Elo: 1836) and cost ($0.000008/1M tokens), making it a top-tier choice for its price bracket.

Highly Recommended Alternatives

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
GPT-6.1 Terra (Max)	1679	$0.000001	50
DeepSeek-V4.1-Flash-20261017 (Max)	1664	$6e-9	178

*These models represent the Pareto Frontier (optimal cost-to-performance).*