OpenAI
gpt-oss-120b
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.
At a glance
- Input / 1M
- $0.04
- Output / 1M
- $0.17
- Context
- 131K
- Max output
- 118K
- Intelligence
- 11.6
- Released
- Aug 2025
Pricing
gpt-oss-120b API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $0.04 |
|---|---|
| Output tokensPer 1M tokens | $0.17 |
| Cached input (read)Per 1M tokens | Not available |
| Cache writePer 1M tokens | Not available |
Chat message
2K in, 500 out
$0.16
per 1,000 requests
Coding task
30K in, 4K out
$1.79
per 1,000 requests
Long document summary
150K in, 2K out
$5.89
per 1,000 requests
Benchmarks
gpt-oss-120b benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
11.6
Coding index
30.4
Agentic index
3.7
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 131K tokens
- Max output
- 118K tokens
- Input types
- Text
- Output types
- Text
- Reasoning effort
- High, Medium, Low
- Release date
- August 5, 2025
- Knowledge cutoff
- June 30, 2024
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
gpt-oss-120b vs other models
See how gpt-oss-120b stacks up head to head on price, benchmarks, and features.
VSgpt-oss-120b vs Muse Spark 1.3 Contributor
OpenAI vs Meta
See comparisonVS
gpt-oss-120b vs Gemini 2.5 Flash Lite
OpenAI vs Google
See comparisonVSgpt-oss-120b vs Gemma 4 31B
OpenAI vs Google
See comparisonVS
gpt-oss-120b vs Qwen3.7 Flash
OpenAI vs Qwen
See comparisonVSgpt-oss-120b vs gpt-oss-20b
OpenAI vs OpenAI
See comparisonVSgpt-oss-120b vs GPT-5 Nano
OpenAI vs OpenAI
See comparisonMore gpt-oss-120b comparisons
- gpt-oss-120b vs Qwen3 235B A22B Instruct 2507
- gpt-oss-120b vs Mercury 2.5
- gpt-oss-120b vs Qwen3.5-9B
- gpt-oss-120b vs Nemotron 3.5 Lightning
- gpt-oss-120b vs GPT-4.1 Nano
- gpt-oss-120b vs Granite 4.2 8B
- gpt-oss-120b vs Nemotron 3 Super
- gpt-oss-120b vs Mistral Small 4
- gpt-oss-120b vs Qwen3 Coder 30B A3B Instruct
- gpt-oss-120b vs Nemotron 3 Nano 30B A3B
Alternatives
gpt-oss-120b alternatives
Similar models worth considering, and where each one has the edge.
Gemma 4 31B
Qwen
Qwen3.5-9B
OpenAI
GPT-5 Nano
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does gpt-oss-120b cost?
gpt-oss-120b costs $0.04 per 1M input tokens and $0.17 per 1M output tokens through the API. A typical chat message costs about $0.16 per 1,000 messages.
What is the context window of gpt-oss-120b?
gpt-oss-120b accepts up to 131K tokens of input and can write up to 118K tokens in a single response.
What is the best alternative to gpt-oss-120b?
Gemma 4 31B from Google is a strong alternative. It offers: higher intelligence score, larger 262k context, accepts image and video.
Can I use gpt-oss-120b alongside other models?
Yes. Shortcut Chat sends one prompt to gpt-oss-120b and any other models you pick at the same time, so you can compare answers side by side.
Try gpt-oss-120b next to every other model.
Use gpt-oss-120b alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.