Is OpenAI: GPT-5.5 or OpenAI: gpt-oss-120b cheaper?

OpenAI: gpt-oss-120b is cheaper on output tokens ($0.19 vs $30.00 per 1M).

Which has the larger context window, OpenAI: GPT-5.5 or OpenAI: gpt-oss-120b?

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

OpenAI: GPT-5.5 vs OpenAI: gpt-oss-120b

OpenAI: gpt-oss-120b is cheaper on output tokens, while OpenAI: GPT-5.5 offers a larger context window. Choose OpenAI: GPT-5.5 or OpenAI: gpt-oss-120b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI: GPT-5.5	OpenAI: gpt-oss-120b
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$5.00	$0.04
Output / 1M tokens	$30.00	$0.19
Context window	1.1M	131K
Parameters	—	117B
Open weights	No	Yes
Released	Apr 2026	Aug 2025

OpenAI: GPT-5.5 details →OpenAI: gpt-oss-120b details →

FAQ

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