Is Claude Opus 4.6 or GPT-5.5 Pro cheaper?

Claude Opus 4.6 is cheaper on output tokens ($25.00 vs $180.00 per 1M).

Which has the larger context window, Claude Opus 4.6 or GPT-5.5 Pro?

GPT-5.5 Pro has the larger context window (1.1M tokens).

Claude Opus 4.6 vs GPT-5.5 Pro

Claude Opus 4.6 is cheaper on output tokens, while GPT-5.5 Pro offers a larger context window. Choose Claude Opus 4.6 or GPT-5.5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.6	GPT-5.5 Pro
Provider	OpenCode Zen	OpenCode Zen
Input / 1M tokens	$5.00	$30.00
Output / 1M tokens	$25.00	$180.00
Context window	1M	1.1M
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Apr 2026

Claude Opus 4.6 details →GPT-5.5 Pro details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.