OpenAI: gpt-oss-20b (free)

openai/gpt-oss-20b:free

CHAT Reasoning

OpenAI: gpt-oss-20b (free) (openai/gpt-oss-20b:free) is a chat model from openrouter with a 131.1K-token context window; capabilities tools, reasoning; input text; output text.

131.1KContext

32.8KMax output

Specifications

Context window: 131,072 tokens (131.1K)
Max output: 32,768 tokens
Input modalities: text
Output modalities: text
Knowledge cutoff: 2024-06-30

Capabilities

tools reasoning

Provenance

committedopenrouter-api

Last verified: 2026-07-24

Related models

MoonshotAI: Kimi K3

moonshotai/kimi-k3

openrouter · CHAT · 1.0M ctx

xAI: Grok 4.5

x-ai/grok-4.5

openrouter · CHAT · 500K ctx

Meta: Muse Spark 1.1

meta/muse-spark-1.1

openrouter · CHAT · 1.0M ctx

Qwen: Qwen3.7 Max

qwen/qwen3.7-max

openrouter · CHAT · 1M ctx

Xiaomi: MiMo-V2.5-Pro

xiaomi/mimo-v2.5-pro

openrouter · CHAT · 1.0M ctx

Tencent: Hy3

tencent/hy3

openrouter · CHAT · 262.1K ctx

Markdown · Vendor JSON · Full catalog · All openrouter models