OpenAI: gpt-oss-20b (batch)
This AI model from OpenAI is designed for text-based input and output. It can handle contexts of up to 131,072 tokens and generate completions of up to 117,964 tokens. The model supports reasoning capabilities but does not provide structured output. For users who prioritize price over performance, this model may be worth considering due to its relatively low input cost ($0.05 per million tokens) compared to its output cost ($0.2 per million tokens). Its blended benchmark score of 25.7 across four independent benchmarks indicates solid performance, but a lower ranking in the AI Index Agentic category suggests it may not excel at more complex tasks; users with specific needs should assess whether this model meets their requirements before making a decision.
Benchmark results
Independent, published benchmarks. Blended score 25.7 across 4 benchmarks, last refreshed 2026-09-04. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 25.1 |
| AI Index Coding | software engineering tasks | 34.1 |
| AI Index Agentic | multi-step tool-using tasks | 5.1 |
| EQ-Bench | emotional understanding in dialogue | 40.7 |
- Model ID
- openai/gpt-oss-20b:batch
- Vendor
- openai
- Released
- August 2025
- Tokenizer
- GPT
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 117,964 tokens
- Tool Calling
- not supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.05/M input and $0.20/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 | $0.04 |
| A month of a busy support chatbot | 5M in / 2M out | $0.65 |
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Quick answers
- How much does OpenAI: gpt-oss-20b (batch) cost?
- $0.05 per million input tokens and $0.20 per million output tokens.
- What is OpenAI: gpt-oss-20b (batch)'s context window?
- 131,072 tokens, roughly 196 pages of text in a single request.
- Does OpenAI: gpt-oss-20b (batch) support tool calling?
- It supports structured output, a reasoning mode.
- Can OpenAI: gpt-oss-20b (batch) process images?
- No, it is text-only on the input side.