OpenAI: gpt-oss-120b
The OpenAI gpt-oss-120b is a text-based AI model that operates within a context of up to 131,072 tokens. It can handle input in the form of text and supports tools for task-oriented processing, as well as reasoning capabilities. However, it does not provide structured output. This model may be worth considering by organizations looking for a balance between performance and cost. At $0.037 per million input tokens and $0.17 per million output tokens, its pricing is competitive. Its blended benchmark score of 40.1 across three independent benchmarks indicates solid performance in areas such as the Aider Polyglot and EQBench tests.
Benchmark results
Independent, published benchmarks. Blended score 39.2 across 3 benchmarks, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| Aider Polyglot | code editing across languages | 41.8 |
| AI Index | broad capability composite | 19.1 |
| 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
- 65,536 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 $0.15/M input and $0.60/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 | $0.10 |
| A month of a busy support chatbot | 5M in / 2M out | $1.95 |
Price & spec history
Tracked daily by PicksByModel since 2026-07-17.
| Date | Input /M | Output /M | Context |
|---|---|---|---|
| 2026-10-13 | $0.15 | $0.60 | 131,072 |
| 2026-09-30 | $0.04 | $0.17 | 131,072 |
| 2026-09-18 | $0.15 | $0.60 | 131,072 |
| 2026-08-23 | $0.04 | $0.17 | 131,072 |
| 2026-08-12 | $0.03 | $0.17 | 131,072 |
| 2026-07-17 | $0.04 | $0.17 | 131,072 |
Similar models
OpenAI: gpt-oss-safeguard-20b
OpenAI: gpt-oss-120b (batch)
OpenAI: gpt-oss-20b
OpenAI: gpt-oss-20b (batch)
OpenAI: GPT-5 Image
OpenAI: GPT-4o (2024-11-20)
Quick answers
- How much does OpenAI: gpt-oss-120b cost?
- $0.15 per million input tokens and $0.60 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.