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Find the right model, side by side.

Updated: Data as of:
First model
Second model

Model specifications

Specifications for Claude Fable 5 and GPT-6 Astra. Prices and performance use the selected provider offering.
SpecificationsClaude Fable 5AnthropicGPT-6 AstraOpenAI
Provider
Context sizetokens1,000,0001,000,000
Cutoff dateNot reported2026-04-30
Input costUSD / 1M tokens$10.00$10.00
Output costUSD / 1M tokens$50.00$50.00
Max outputtokens128,000128,000
LatencyTTFT · seconds117.332365.127
Speedtokens / sec68.16870.564

Benchmark performance

10 shared benchmark comparisons. Versions and setups matched.

Claude Fable 5GPT-6 Astra

GDPval-AA

2.1 ↗
  1. Claude Fable 5: 1,618.39 Elo
  2. GPT-6 Astra: 1,583.69 Elo