Is Claude Sonnet 4.5 (US) or GPT-5.4 cheaper?

Claude Sonnet 4.5 (US) is cheaper on output tokens ($15.00 vs $16.50 per 1M).

Which has the larger context window, Claude Sonnet 4.5 (US) or GPT-5.4?

GPT-5.4 has the larger context window (272K tokens).

Claude Sonnet 4.5 (US) vs GPT-5.4

Claude Sonnet 4.5 (US) is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose Claude Sonnet 4.5 (US) or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Sonnet 4.5 (US)	GPT-5.4
Provider	Amazon Bedrock	Amazon Bedrock
Input / 1M tokens	$3.00	$2.75
Output / 1M tokens	$15.00	$16.50
Context window	200K	272K
Parameters	—	—
Open weights	No	No
Released	Sep 2025	Mar 2026

Claude Sonnet 4.5 (US) details →GPT-5.4 details →

FAQ

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