gpt-oss-120b: open weights, no list price
OpenAI publishes the weights of gpt-oss-120b but sells no API for it, so there is no list price to work from. What is known about it is below, beside the models it is weighed against.
US dollars per million tokens, standard rate, shortest context band.
- Context window
- 131,072 tokens
- Released
- 5 Aug 2025
- Weights
- Open
Read 22 September 2026.
gpt-oss-120b is an open-weight model from OpenAI, which does not sell it on a paid API of its own, so it has no list price: what it costs depends on the host that runs it, or on your own hardware. It reads up to 131,072 tokens at once and was released on 5 Aug 2025.
gpt-oss-120b on real small-business tasks
What the AIGROW benchmark measured when gpt-oss-120b was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 75% of 20 runs passed (95% interval 53 to 89%), 23rd of 36 models.
- Cost per 1,000 passes
- $0.422, failed runs included.
- Answer time
- 33 s median, 69 s at the 90th percentile.
- Strongest and weakest
- Bookkeeping (100% passed) and review replies (0%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
No first-party price: open-weight model (Apache 2.0) that OpenAI does not serve on its API. Cost depends on the third-party host. Specs from https://developers.openai.com/api/docs/models/gpt-oss-120b; release date from the OpenAI model card dated August 5, 2025.
gpt-oss-120b against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs Llama 4 Maverick
- Open-weight models from two US labs that many hosts serve, neither sold on a first-party API.
- vs DeepSeek V4.1 Flash
- An open-weight model with no first-party price against the cheapest first-party API from DeepSeek.
Other OpenAI models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| GPT-5.6 LunaOpenAI | $0.20 | $1.20 | 1.05M | $1.08 |
| GPT-5.4 nanoOpenAI | $0.20 | $1.25 | 400K | $1.10 |
| GPT-5.4 miniOpenAI | $0.75 | $4.50 | 400K | $4.05 |
| GPT-5.6 TerraOpenAI | $2.00 | $12.00 | 1.05M | $10.80 |
| GPT-5.6 SolOpenAI | $4.00 | $20.00 | 1.05M | $20.00 |
| GPT-5.5OpenAI | $5.00 | $30.00 | 1.05M | $27.00 |
| GPT-6 AstraOpenAI | $10.00 | $50.00 | 1.05M | $50.00 |
Where the price comes from
Read on 22 September 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Pay a quarter of list price
AIGROW API credit is metered at the makers’ list prices, and $25 buys $100 of usage. The credit page lists the models it covers; ask about any other before buying.
Prices checked 22 September 2026