Is Claude-Sonnet-3.7 or GPT-5.5-Pro cheaper?

Claude-Sonnet-3.7 is cheaper on output tokens ($13.00 vs $163.64 per 1M).

Which has the larger context window, Claude-Sonnet-3.7 or GPT-5.5-Pro?

GPT-5.5-Pro has the larger context window (400K tokens).

Claude-Sonnet-3.7 vs GPT-5.5-Pro

Claude-Sonnet-3.7 is cheaper on output tokens, while GPT-5.5-Pro offers a larger context window. Choose Claude-Sonnet-3.7 or GPT-5.5-Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude-Sonnet-3.7	GPT-5.5-Pro
Provider	Poe	Poe
Input / 1M tokens	$2.60	$27.27
Output / 1M tokens	$13.00	$163.64
Context window	197K	400K
Parameters	—	—
Open weights	No	No
Released	Feb 2025	Apr 2026

Claude-Sonnet-3.7 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.