Claude Fable 5.5 (Leaked Checkpoint) vs ConvAI Laya

A direct, empirical evaluation of Claude Fable 5.5 (Leaked Checkpoint) (Anthropic) against ConvAI Laya (ConvAI Innovations (Vishal Mysore / visrow)).

Claude Fable 5.5 (Leaked Checkpoint)

Developed by Anthropic · Proprietary Frontier Dynamic Reasoner parameters

Terminal-Bench 4.0 autonomous shell execution (78.5% target), recursive self-critique, and 1.5M-token repository refactoring.

ConvAI Laya

Developed by ConvAI Innovations (Vishal Mysore / visrow) · 421 Million (ModernBERT-large Backbone) parameters

Client-side in-browser decision execution via WebGPU/WASM, zero-cost operational routing, private on-device medical/financial triage, and domain-specific fine-tuning.

Metric Claude Fable 5.5 (Leaked Checkpoint) ConvAI Laya
SWE-bench Verified 84.2% 64.2%
MMLU-Pro 94.6% 82.4%
MATH-500 98.4% 88.5%
Context Window 1,500,000 tokens 8,192 tokens
Input Pricing (per 1M) $3.50 $0.00
Output Pricing (per 1M) $17.50 $0.00