gpt-oss-20b

Name: gpt-oss-20b
Brand: openai
SKU: openai/gpt-oss-20b
Price: 0.019 USD
Availability: InStock

openai/gpt-oss-20b

text in · text out · 131,072 context · 32,768 max output

toolsschemareasoningcacheno-trainShow prices also in

Effective cost per 1k requestsInput tokens 2,000Output tokens 500Cached share 50%

cost = p_in·(input − cached) + p_cache_read·cached + p_out·output + p_req; cached tokens are the prefix a sticky endpoint already holds (part2b §9.3), which is why the cheapest list price is not always the cheapest request.

Provider	Region · quant	Context / max out	Input / M	Output / M	Cache read / write	Markup	Per 1k req	Uptime 30 d	TTFT p50 / p95	Throughput	Last 24 h	Fidelity	Data	Capabilities	Status
OpenRouter	global · unknown	131,072 / 32,768	$0.019	$0.095	$0.009 / —	+5.0%	$0.076	—	—	—	no traffic	—	no-train 30 d	model default	active

Quick start

curl https://api.ai.ml/v1/chat/completions \
  -H "Authorization: Bearer $AIML_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-oss-20b","messages":[{"role":"user","content":"Say hello"}]}'

Get a key in the console

Changelog

new_model model openai/gpt-oss-20b added (active); endpoint ep_openrouter_gpt-oss-20b_global (openai/gpt-oss-20b) added as active; price input 0.019 output 0.095 USD/M 10/5/2026