Updated 6/9/2026
Run OpenAI's open-weight GPT-OSS 20B — fast, capable, low-latency reasoning — free on Cloudflare Workers AI.
GPT-OSS 20B is the smaller, faster sibling of GPT-OSS 120B — great when you want quick responses and lower latency while keeping solid reasoning and tool-use.
A strong everyday workhorse for chatbots, drafting, and lightweight agents, with the same open license as the 120B model.
Covered by Cloudflare Workers AI's 10,000 free Neurons per day through the /ai/run endpoint.
Pick a model, paste your own free key, and run. Your key is sent once to call the provider and never stored on our servers.
The model's reply will stream here.
curl https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT_ID/ai/run/@cf/openai/gpt-oss-20b \
-H "Authorization: Bearer $CF_API_TOKEN" \
-d '{"messages":[{"role":"user","content":"Summarize the plot of Hamlet in two sentences."}]}'import os, requests
account = os.environ["CF_ACCOUNT_ID"]
token = os.environ["CF_API_TOKEN"]
resp = requests.post(
f"https://api.cloudflare.com/client/v4/accounts/{account}/ai/run/@cf/openai/gpt-oss-20b",
headers={"Authorization": f"Bearer {token}"},
json={"messages": [{"role": "user", "content": "Summarize the plot of Hamlet in two sentences."}]},
)
print(resp.json()["result"]["response"])The following platforms provide free access to GPT-OSS 20B through free tiers, trial credits, or daily quotas.
| Provider | Context Window | Free Quota | Requires CC | Trust | Action |
|---|---|---|---|---|---|
| Cloudflare Workers AI | N/A | 100 requests per day | No | Trust 99 | Details |
Yes. GPT-OSS 20B is available for free through 1 provider(s) listed below, with no purchase required.
Free access varies by provider — Cloudflare Workers AI: Rate Limit.
Sign up with Cloudflare Workers AI, then create an API key from your dashboard. See the provider details above for the exact steps.
GPT-OSS 20B is currently available for free via: Cloudflare Workers AI.
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