Lightweight open-source 20B model with reasoning support for efficient inference.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Lightweight open-source 20B model with reasoning support for efficient inference. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for GPT OSS 20B on LLM Gateway starts at $0.04 per million input tokens and $0.15 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
GPT OSS 20B supports a context window of up to 131,072 tokens on its largest provider deployment.
GPT OSS 20B is served by Groq, NanoGPT, Together AI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. GPT OSS 20B supports both tool (function) calling and structured JSON outputs through LLM Gateway.
GPT OSS 20B was released on August 5, 2025.
GPT-5.6 Sol
1,050,000 context$5.00 in / $30.00 out per 1M
GPT-5.6 Terra
1,050,000 context$2.00 in / $12.00 out per 1M
GPT-5.6 Luna
1,050,000 context$0.20 in / $1.20 out per 1M
GPT Realtime 2.1
128,000 context$4.00 in / $24.00 out per 1M
GPT Realtime 2.1 Mini
128,000 context$0.60 in / $2.40 out per 1M
GPT-5.5
1,050,000 context$5.00 in / $30.00 out per 1M