---
id: "openai/gpt-oss-120b"
also: ["openai/gpt-oss-120b", "hf/openai/gpt-oss-120b", "requesty/openai/gpt-oss-120b", "vercel/openai/gpt-oss-120b"]
cheapest_list_usd_per_m: "0.03 in, 0.17 out, at akashml/bf16 on openrouter"
cheapest_effective_usd_per_m: "0.0204 in, 0.1489 out, at near-ai/fp4 on openrouter"
context: 131072
max_output: 65536
input: ["text"]
output: ["text"]
released: "2025-08-05"
reasoning: ["high", "medium", "low"]
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["frequency_penalty", "include_reasoning", "logit_bias", "logprobs", "max_tokens", "min_p", "presence_penalty", "reasoning", "reasoning_effort", "repetition_penalty", "response_format", "seed", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "top_a", "top_k", "top_logprobs", "top_p"]
endpoints: 59
gateways: "openrouter (30), vercel (12), hf (11), requesty (6)"
no_training: 47
trains: 0
retains_prompts: 1
intelligence: 3.8000
coding: 30.4000
agentic: 3.7000
---
# OpenAI: gpt-oss-120b

GPT-OSS-120B is OpenAI's open-weight large language model with 116 billion total parameters (5.1 billion active, Mixture-of-Experts). Designed for high-performance reasoning, agentic tasks, function calling, and general-purpose applications. Supports configurable reasoning depth and chain-of-thought. Released under Apache 2.0 license.