# GPT OSS 120B

> OpenAI's open-weight 120B model for production and high reasoning use cases.

Agent resources: the index of everything machine-readable is https://www.ohmygpt.com/llms.txt; the integration skill (endpoints, auth, SDK and coding-tool setup) is https://www.ohmygpt.com/skill.md.

- Model ID: `openai/gpt-oss-120b`
- Live status and providers as JSON, no key needed: https://api.ohmygpt.com/v1/models/openai/gpt-oss-120b
- Released: 2025-08-30
- Context: 128K tokens
- Max output: 16K tokens
- Input: text; output: text
- Capability score: 140 (as of 2026-11-10, see https://www.ohmygpt.com/rankings.md)
- Human preference rating (LMArena text): 1365

## Prices (USD)

| Item | Price | Unit |
| --- | --- | --- |
| Input | $0.165–$0.385 | per 1M tokens |
| Output | $0.66–$0.825 | per 1M tokens |
| Cache read | $0.0825–$0.385 | per 1M tokens |

## Providers

Without a prefix each request goes to the best-priced healthy provider. To pin one, send the model as `<provider>:openai/gpt-oss-120b`.

| Provider | Pinned model ID | Location | Input | Output | Trains on your data |
| --- | --- | --- | --- | --- | --- |
| Cerebras | `cerebras:openai/gpt-oss-120b` | United States | $0.385 | $0.825 | no |
| Groq | `groq:openai/gpt-oss-120b` | United States | $0.165 | $0.66 | no |
| Together AI | `together:openai/gpt-oss-120b` | United States | $0.165 | $0.66 | no |
| Amazon Bedrock | `bedrock:openai/gpt-oss-120b` | United States | $0.165 | $0.66 | no |

## Endpoints

| API | Request | model |
| --- | --- | --- |
| OpenAI Chat | POST https://api.ohmygpt.com/v1/chat/completions | `openai/gpt-oss-120b` |
| OpenAI Responses | POST https://api.ohmygpt.com/v1/responses | `openai/gpt-oss-120b` |
| Anthropic Messages | POST https://api.ohmygpt.com/v1/messages | `openai/gpt-oss-120b` |
| Google Gemini | POST https://api.ohmygpt.com/v1/models/openai/gpt-oss-120b:generateContent | `openai/gpt-oss-120b` |

## Example

```bash
curl https://api.ohmygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-oss-120b",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'
```

Web page: https://www.ohmygpt.com/models/openai/gpt-oss-120b