Claude Opus 5.5 vs GPT-6 Astra Pricing Comparison

Head-to-head token pricing, context window limits, and blended inference cost comparison between Claude Opus 5.5 (Anthropic) and GPT-6 Astra (OpenAI).

Direct Answer Summary (3:1 Blended Cost)

GPT-6 Astra costs 2.5x more than Claude Opus 5.5 on a 3:1 blended token workload. Claude Opus 5.5 has a context window of 1000k tokens, while GPT-6 Astra provides 1050k tokens.

Anthropic

Claude Opus 5.5

Input / 1M
$4.0000
Output / 1M
$20.0000
3:1 Blended / 1M
$8.0000
Context Window
1000k tokens
OpenAI

GPT-6 Astra

Input / 1M
$10.0000
Output / 1M
$50.0000
3:1 Blended / 1M
$20.0000
Context Window
1050k tokens
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