Anthropic · OpenAI · catalog 2026-09-14
| Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) | GPT-6 Astra (low) | |
|---|---|---|
| Speed (tok/s) | 47.4 measured | 52.1 measured |
| Blended $/M | $7.175 derived | $7.7 derived |
| Intelligence index | 47 measured | 46 measured |
| TTFT (ms) | 511 measured | 21 measured |
| Context | — | — |
| Coding index | 75 measured | 76 measured |
| Agentic index | 48 measured | 4 measured |
Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) card · GPT-6 Astra (low) card · 3D observatory
Verdicts use price×intelligence dominance only, and only where both sides are measured; null cells stay null with their provenance (em-dash = not in catalog). Percentile-free by design — this page compares two models, not the field. Generated page — do not hand-edit.