Models / OpenAI

GPT OSS 20B

openai/gpt-oss-20b

Open GPT reasoning model for self-hosted agents and controllable deployments

Source-linkedgpt-ossOpen weightsReleased 2025-08-05

Report data

Context window131.072K

Maximum output32.768K

Provider offers26

Knowledge cutoffUndisclosed

Capabilities

What this model supports

ReasoningYes

Tool callingYes

Structured outputYes

AttachmentsNo

Temperature controlYes

Open weightsYes

Creator: OpenAI
Family: gpt-oss
Modalities: Text
License: Not documented
Release date: 2025-08-05
Model ID: openai/gpt-oss-20b

Market availability

Provider pricing

Report price →

Providers offering GPT OSS 20B
Provider	Provider model ID	Context	Input / 1M	Output / 1M	Cached / 1M	Features	All pricing
LMStudio	`openai/gpt-oss-20b`	131.072K	$0.000	$0.000	—	R T ·	View { "input": 0, "output": 0 }
Nvidia	`openai/gpt-oss-20b`	131.072K	$0.000	$0.000	—	R T S	View { "input": 0, "output": 0 }
Kenari	`gpt-oss-20b`	131.072K	$0.000	$0.000	—	R T ·	View { "input": 0, "output": 0 }
OpenRouter	`openai/gpt-oss-20b`	131.072K	$0.029	$0.140	—	R T S	View { "input": 0.029, "output": 0.14 }
Deep Infra	`openai/gpt-oss-20b`	131.072K	$0.030	$0.140	—	R T S	View { "input": 0.03, "output": 0.14 }
Kilo Gateway	`openai/gpt-oss-20b`	131.072K	$0.030	$0.140	—	R T ·	View { "input": 0.03, "output": 0.14 }
Weights & Biases	`openai/gpt-oss-20b`	131.072K	$0.030	$0.130	$0.030	R T S	View { "cache_read": 0.03, "input": 0.03, "output": 0.13 }
IO.NET	`openai/gpt-oss-20b`	64K	$0.030	$0.140	$0.015	· T ·	View { "cache_read": 0.015, "cache_write": 0.06, "input": 0.03, "output": 0.14 }
NanoGPT	`openai/gpt-oss-20b`	128K	$0.040	$0.150	—	R · ·	View { "input": 0.04, "output": 0.15 }
NovitaAI	`openai/gpt-oss-20b`	131.072K	$0.040	$0.150	—	R · S	View { "input": 0.04, "output": 0.15 }
LLM Gateway	`gpt-oss-20b`	131.072K	$0.040	$0.150	—	R T S	View { "input": 0.04, "output": 0.15 }
SiliconFlow	`openai/gpt-oss-20b`	131K	$0.040	$0.180	—	· T S	View { "input": 0.04, "output": 0.18 }
Clarifai	`openai/chat-completion/models/gpt-oss-20b`	131.072K	$0.045	$0.180	—	R T ·	View { "input": 0.045, "output": 0.18 }
Together AI	`openai/gpt-oss-20b`	131.072K	$0.050	$0.200	—	R T S	View { "input": 0.05, "output": 0.2 }
Vercel AI Gateway	`openai/gpt-oss-20b`	131.072K	$0.050	$0.200	—	R T S	View { "input": 0.05, "output": 0.2 }
Databricks	`databricks-gpt-oss-20b`	131.072K	$0.050	$0.200	—	R T S	View { "input": 0.05, "output": 0.2 }
FastRouter	`openai/gpt-oss-20b`	131.072K	$0.050	$0.200	—	R T ·	View { "input": 0.05, "output": 0.2 }
Neon	`gpt-oss-20b`	131.072K	$0.050	$0.200	—	R T S	View { "input": 0.05, "output": 0.2 }
FrogBot	`gpt-oss-20b`	131.072K	$0.070	$0.200	—	R T S	View { "input": 0.07, "output": 0.2 }
Fireworks AI	`accounts/fireworks/models/gpt-oss-20b`	131.072K	$0.070	$0.300	$0.035	R T ·	View { "cache_read": 0.035, "input": 0.07, "output": 0.3 }
Pioneer	`openai/gpt-oss-20b`	131.072K	$0.070	$0.300	$0.035	R T S	View { "cache_read": 0.035, "cache_write": 0.07, "input": 0.07, "output": 0.3 }
Vertex	`openai/gpt-oss-20b-maas`	131.072K	$0.070	$0.250	—	R T ·	View { "input": 0.07, "output": 0.25 }
Groq	`openai/gpt-oss-20b`	131.072K	$0.075	$0.300	$0.037	R T S	View { "cache_read": 0.0375, "input": 0.075, "output": 0.3 }
Hugging Face	`openai/gpt-oss-20b`	131.072K	$0.100	$0.500	—	R T S	View { "input": 0.1, "output": 0.5 }
STACKIT	`openai/gpt-oss-20b`	131.072K	$0.180	$0.290	—	R T ·	View { "input": 0.18, "output": 0.29 }
Cloudflare Workers AI	`@cf/openai/gpt-oss-20b`	128K	$0.200	$0.300	—	R T S	View { "input": 0.2, "output": 0.3 }