OpenAI: gpt-oss-120b
The OpenAI gpt-oss-120b is designed for handling text inputs with a context length of 131,072 tokens and supports reasoning and tools. Its structured output capability remains unverified, though it excels in certain benchmarks. For those requiring extensive text-based processing, this model offers robust support. Given its blended benchmark score of 43.1 across five independent tests, the gpt-oss-120b is a solid choice for applications that demand high performance in text understanding and generation. Its pricing at $0.03 per million input tokens and $0.17 per million output tokens makes it cost-effective for moderate to large-scale projects. This model should be considered by users seeking balanced performance and value, particularly in scenarios involving complex text-based tasks.
Benchmark results
Independent, published benchmarks. Blended score 43.1 across 5 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| Aider Polyglot | code editing across languages | 41.8 |
| AI Index | broad capability composite | 39.8 |
| AI Index Coding | software engineering tasks | 50.2 |
| AI Index Agentic | multi-step tool-using tasks | 22.2 |
| EQ-Bench | emotional understanding in dialogue | 53.4 |
- Model ID
- openai/gpt-oss-120b
- Vendor
- openai
- Released
- August 2025
- Tokenizer
- GPT
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 131,072 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.03/M input and $0.17/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | under $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.02 |
| A month of a busy support chatbot | 5M in / 2M out | $0.49 |
Price & spec history
Tracked daily by PicksByModel since 2026-07-17.
| Date | Input /M | Output /M | Context |
|---|---|---|---|
| 2026-08-12 | $0.03 | $0.17 | 131,072 |
| 2026-07-17 | $0.04 | $0.17 | 131,072 |
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Quick answers
- How much does OpenAI: gpt-oss-120b cost?
- $0.03 per million input tokens and $0.17 per million output tokens.
- What is OpenAI: gpt-oss-120b's context window?
- 131,072 tokens, roughly 196 pages of text in a single request.
- Does OpenAI: gpt-oss-120b support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: gpt-oss-120b process images?
- No, it is text-only on the input side.