Model comparison

Claude Opus 5.5 vs GPT-6 Astra

Compare listed prices, context windows and vision support.

Side-by-side comparison

SpecClaude Opus 5.5GPT-6 Astra
Listed input price$4/M$10/M
Listed output price$20/M$50/M
Context window1M tokens1M tokens
VisionYesYes

Good for

Claude Opus 5.5

Its listed input price places it in the catalog's tier for the hardest reasoning, architecture and review work. Vision support fits UI screenshots, browser and visual tasks, while the 1M tokens context window suits large monorepos and long sessions.

GPT-6 Astra

Its listed input price places it in the catalog's tier for the hardest reasoning, architecture and review work. Vision support fits UI screenshots, browser and visual tasks, while the 1M tokens context window suits large monorepos and long sessions.

Data summary

Claude Opus 5.5 lists lower input and output prices. Both models have a 1M tokens context window. Both models support vision.

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Catalog updated 2026-10-01