Is OpenAI GPT-OSS 20b or Anthropic: Claude Opus 4.1 cheaper?

OpenAI GPT-OSS 20b is cheaper on output tokens ($0.20 vs $75.00 per 1M).

Which has the larger context window, OpenAI GPT-OSS 20b or Anthropic: Claude Opus 4.1?

Anthropic: Claude Opus 4.1 has the larger context window (200K tokens).

OpenAI GPT-OSS 20b vs Anthropic: Claude Opus 4.1

OpenAI GPT-OSS 20b is cheaper on output tokens, while Anthropic: Claude Opus 4.1 offers a larger context window. Choose OpenAI GPT-OSS 20b or Anthropic: Claude Opus 4.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI GPT-OSS 20b	Anthropic: Claude Opus 4.1
Provider	Helicone	Helicone
Input / 1M tokens	$0.05	$15.00
Output / 1M tokens	$0.20	$75.00
Context window	131K	200K
Parameters	21B	—
Open weights	No	No
Released	Jun 2024	Aug 2025

OpenAI GPT-OSS 20b details →Anthropic: Claude Opus 4.1 details →

FAQ

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