---
title: OpenAI: Gpt Oss 20b API | LLM | ModelsLab
description: Efficient open-weight reasoning model with 20B parameters (3.6B active), 128K context window, runs on 16GB memory—ideal for local inference and edge.
url: https://modelslab.com/models/openai/openai-gpt-oss-20b.md
canonical: https://modelslab.com/models/openai/openai-gpt-oss-20b.md
type: product
component: Playground/LLM/Index
generated_at: 2026-04-09T06:12:47.417601Z
---

OpenAI: gpt-oss-20b

 [LLMs.txt](https://modelslab.com/models/open_router/openai-gpt-oss-20b/llms.txt) [.md](https://modelslab.com/models/openai/openai-gpt-oss-20b.md)

OpenAI: gpt-oss-20b
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### OpenAI: gpt-oss-20b

openai openai-gpt-oss-20b

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PricingInput $0.03 / 1M tokens

Output $0.11 / 1M tokens

API EndpointsOpenAI Compatible

`https://modelslab.com/api/v7/llm/chat/completions`Endpoint

Anthropic Compatible

`https://modelslab.com/api/v7/llm/v1/messages`Messages

`https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens

`https://modelslab.com/api/v7/llm/v1/models`Models

Use with Claude Code

cURL Example

ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses.

Temperature0.7

Max Tokens1000

Top P0.9

Frequency Penalty0

Presence Penalty0

Model Info

Support

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*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

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*Generated by ModelsLab - 2026-04-09*