OpenAI: gpt-oss-120b (exacto)
Analysis Summary
gpt-oss-120b exacto is a large OpenAI open-weight variant with a 131K context window, tool use, and function calling. Those capabilities support structured automation, technical assistance, and agents that need to connect language output with external tools. The text-only interface limits it to language and code workflows.
Its listed pricing is highly competitive at 0.039 per million input tokens and 0.19 per million output tokens, which suits high-volume experimentation and internal automation. No benchmark data is supplied for this exacto variant, so capability and reliability cannot be assumed from the model name alone. Use it for pilots, routing, and reviewable coding tasks, then validate tool execution and output quality before assigning client-facing work.
Assessed September 7, 2026
Editorial notes
gpt-oss-120b exacto offers 131K context, tool and function calling, and very low listed pricing for coding and automation; this exact variant has no supplied benchmark data.
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DFO Verdict
gpt-oss-120b exacto offers 131K context, tool and function calling, and very low listed pricing for coding and automation; this exact variant has no supplied benchmark data.
How OpenAI: gpt-oss-120b (exacto) compares
Its 131K-token context window is larger than 48% of the models we list. At $0.04 per million input tokens it is cheaper than 77% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.04 | $0.000039 |
| Output | $0.19 | $0.000190 |
What would OpenAI: gpt-oss-120b (exacto) cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 756 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save OpenAI: gpt-oss-120b (exacto) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: gpt-oss-120b (exacto)
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized to run on a single H100 GPU with native MXFP4 quantization. The model supports configurable reasoning depth, full chain-of-thought access, and native tool use, including function calling, browsing, and structured output generation.
Frequently asked questions about OpenAI: gpt-oss-120b (exacto)
How much does OpenAI: gpt-oss-120b (exacto) cost?
OpenAI: gpt-oss-120b (exacto) costs $0.04 per million input tokens and $0.19 per million output tokens.
What is the context window of OpenAI: gpt-oss-120b (exacto)?
OpenAI: gpt-oss-120b (exacto) has a context window of 131,072 tokens (131K).
What can OpenAI: gpt-oss-120b (exacto) do?
OpenAI: gpt-oss-120b (exacto) supports tool use and function calling.
Who created OpenAI: gpt-oss-120b (exacto)?
OpenAI: gpt-oss-120b (exacto) is developed by OpenAI and was released on August 5, 2025.