How much does gpt-oss-120b cost per million tokens?

$0.10 per million input tokens and $0.50 per million output tokens, as listed on OpenRouter on October 22, 2026.

Does gpt-oss-120b support prompt caching?

Yes. OpenRouter lists cached input at $0.075 per million tokens, against $0.10 for uncached input.

Is there a cheaper model as good as gpt-oss-120b?

Qwen3.5-Flash scores 50.1 on the LLMBenchmark Index, within two points of gpt-oss-120b or above it, and costs $0.26 per million output tokens.

gpt-oss-120b API pricing

As of October 22, 2026, OpenAI gpt-oss-120b costs $0.10 per million input tokens and $0.50 per million output tokens, the median of 24 providers on OpenRouter, with cached input at $0.075 per million.

gpt-oss-120b benchmarks and specs · Every OpenAI model's price

Input, per million tokens$0.10
Output, per million tokens$0.50
Cached input, per million$0.075
Context window131K tokens
Max output66K tokens
Output speed221 tok/s

What a request costs

Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.

Cost of three workloads on gpt-oss-120b
Workload	Tokens	One request	1,000 requests	Fits the context window
Chat turn	1K input + 500 output tokens	$0.0003	$0.350	Yes
Repository review	50K input + 3K output tokens	$0.0065	$6.50	Yes
Agent loop	200K input + 10K output tokens	$0.025	$25.00	No, it would need splitting
Solved coding task	One SWE-bench Verified attempt, divided by the share that succeed	$0.51	$510.00

Price history

The price of gpt-oss-120b here is the median across 24 providers on OpenRouter, so we do not track price changes for it.

Cheaper models as good as gpt-oss-120b

Models within two points of gpt-oss-120b or above it on the LLMBenchmark Index, with a lower output price. Cheapest first.

gpt-oss-120b pricing questions

How much does gpt-oss-120b cost per million tokens?: $0.10 per million input tokens and $0.50 per million output tokens, as listed on OpenRouter on October 22, 2026.
Does gpt-oss-120b support prompt caching?: Yes. OpenRouter lists cached input at $0.075 per million tokens, against $0.10 for uncached input.
Is there a cheaper model as good as gpt-oss-120b?: Qwen3.5-Flash scores 50.1 on the LLMBenchmark Index, within two points of gpt-oss-120b or above it, and costs $0.26 per million output tokens.
Has the price of gpt-oss-120b changed?: The price of gpt-oss-120b here is the median across 24 providers on OpenRouter, so we do not track price changes for it.