Is Claude Sonnet 4.5 or gpt-oss-20b cheaper?

gpt-oss-20b is cheaper on output tokens ($0.30 vs $15.00 per 1M).

Which has the larger context window, Claude Sonnet 4.5 or gpt-oss-20b?

Claude Sonnet 4.5 has the larger context window (200K tokens).

Claude Sonnet 4.5 vs gpt-oss-20b

gpt-oss-20b is cheaper on output tokens, while Claude Sonnet 4.5 offers a larger context window. Choose Claude Sonnet 4.5 or gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Sonnet 4.5	gpt-oss-20b
Provider	Amazon Bedrock	Amazon Bedrock
Input / 1M tokens	$3.00	$0.07
Output / 1M tokens	$15.00	$0.30
Context window	200K	128K
Parameters	—	21B
Open weights	No	No
Released	Sep 2025	Aug 2025

Claude Sonnet 4.5 details →gpt-oss-20b details →

FAQ

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