Is StepFun: Step 3.5 Flash or OpenAI: gpt-oss-120b cheaper?

OpenAI: gpt-oss-120b is cheaper on output tokens ($0.19 vs $0.30 per 1M).

Which has the larger context window, StepFun: Step 3.5 Flash or OpenAI: gpt-oss-120b?

StepFun: Step 3.5 Flash has the larger context window (256K tokens).

StepFun: Step 3.5 Flash vs OpenAI: gpt-oss-120b

OpenAI: gpt-oss-120b is cheaper on output tokens, while StepFun: Step 3.5 Flash offers a larger context window. Choose StepFun: Step 3.5 Flash or OpenAI: gpt-oss-120b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	StepFun: Step 3.5 Flash	OpenAI: gpt-oss-120b
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$0.10	$0.04
Output / 1M tokens	$0.30	$0.19
Context window	256K	131K
Parameters	—	117B
Open weights	Yes	Yes
Released	Jan 2026	Aug 2025

StepFun: Step 3.5 Flash 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.