gpt-oss-120b token counter
Type or paste a prompt to count gpt-oss-120b tokens and estimate what it costs to run — free, live, and private.
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Counts include each model's own chat-template overhead.
128 charsgpt-oss-120b
OpenAI · 131k context…tokens
About gpt-oss-120b tokenization
- Vendor
- OpenAI
- Context window
- 131k tokens
- Pricing (per 1M tokens)
- open weights — varies by host
- How we count
- its open tokenizer (openai/gpt-oss-120b), running entirely in your browser
FAQ
How accurate is this gpt-oss-120b token count?
Exact — it uses its open tokenizer (openai/gpt-oss-120b), running entirely in your browser, the same tokenizer the model uses in production.
Does my prompt leave the browser?
No. Tokenization runs entirely in your browser.
What does a gpt-oss-120b request cost?
This model is open-weights, so cost depends entirely on where you host it.