Models / OpenAI

gpt-oss-20b API pricing

$0.16 in, $0.72 out per million tokens.

gpt-oss-20bmanaged routeOpenAI SDK

Price · per million tokens, USD

Get a key
TokensOpenAI list priceUplinkSwitchSaving
Input—$0.16—
Cached inputBilled at the input rate.
Output—$0.72—
No list price on record. Same price on every host.

gpt-oss-20b: what it is · from OpenAI’s own model card, read 2026-10-20

OpenAI’s smaller open-weight model, for lower latency and local or specialized use. It is served as gpt-oss-20b at $0.16 input and $0.72 output per million tokens, on the same key as every other model in the catalog.

gpt-oss-20b
DeveloperOpenAI
Parameters21B total, 3.6B active per token
Context131,072 tokens in its config
LicenseApache-2.0
Published2025-08-04
Downloads, 30 days to 2026-10-205,933,604
Sourceopenai/gpt-oss-20b

From openai/gpt-oss-20b, read 2026-10-20.

curl
curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"gpt-oss-20b","max_tokens":1024,"messages":[{"role":"user","content":"Hello"}]}'

gpt-oss-20b next to OpenAI’s other models · per million tokens, live

ModelHere, in / out1,000 chat turns
GPT-6 Luna$0.0625 / $0.20$0.23
GPT OSS 120B Uncensored$0.1095 / $0.728$0.58
GPT-5.6 Luna$0.12 / $0.72$0.60
gpt-oss-20b$0.16 / $0.72$0.68
GPT-4o mini$0.30 / $1.20$1.20
gpt-oss-120b$0.20 / $1.80$1.30
GPT-6 Sol$0.60 / $3.00$2.70
GPT-6.1 Sol$0.60 / $3.00$2.70
GPT-5.6 Sol$1.20 / $3.00$3.90
GPT-5.6 Terra$1.20 / $3.60$4.20
GPT-5.4 Mini$0.9375 / $5.625$4.69
GPT-5.5$1.80 / $9.00$8.10
GPT-6 Astra$3.00 / $15.00$13.50
GPT-5.4$3.125 / $18.75$15.63
GPT-4o$5.00 / $20.00$20.00
GPT-5.3-Codex$3.50 / $28.00$21.00

A chat turn is 2,000 input and 500 output tokens. Live from the catalog, ordered by the cost of 1,000 turns.

Worked for gpt-oss-20b: 1,000 turns are 2,000,000 input tokens and 500,000 output tokens. At $0.16 input and $0.72 output per million tokens, that is $0.32 + $0.36 = $0.68, paid from prepaid credit with no subscription.

gpt-oss-20b API · base URL and key

Python · OpenAI SDK
from openai import OpenAI

client = OpenAI(
    base_url="https://api.uplinkswitch.com/v1",
    api_key="sk-uplink-live-...",
)

completion = client.chat.completions.create(
    model="gpt-oss-20b",
    messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)
TypeScript · OpenAI SDK
import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.uplinkswitch.com/v1',
  apiKey: 'sk-uplink-live-...',
});

const completion = await client.chat.completions.create({
  model: 'gpt-oss-20b',
  messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);
curl
curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"gpt-oss-20b","messages":[{"role":"user","content":"Hello"}]}'

What would it cost? · paste a prompt, priced before you send it

Input is counted at about 4 characters per token.

Cheapest first. A real request is billed on the provider's own token count. Same estimate as JSON: POST https://api.uplinkswitch.com/v1/estimate, no key needed.

gpt-oss-20b questions

What is gpt-oss-20b?
gpt-oss-20b is a model from OpenAI. Through UplinkSwitch it answers the OpenAI SDK on one key as gpt-oss-20b.
How much does the gpt-oss-20b API cost?
$0.16 per million input tokens and $0.72 per million output tokens.
Is gpt-oss-20b free?
It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0005.
What is the gpt-oss-20b model id?
gpt-oss-20b. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.
How do I get a gpt-oss-20b API key?
Create one in the console at uplinkswitch.ai/console: prepaid credit from $10, no subscription, and the key is live at once. The same key calls gpt-oss-20b and every other model in the catalog; send it as the bearer token with base URL https://api.uplinkswitch.com/v1.
Is it the real gpt-oss-20b?
Every day each model gets the same test prompt, and a model always counts that prompt the same way; a swapped one would not. gpt-oss-20b's latest result: Same fingerprint since Oct 22.
Is there a gpt-oss-20b API?
Yes: gpt-oss-20b on the OpenAI format at https://api.uplinkswitch.com/v1, $0.16 input and $0.72 output per million tokens. No weights to download and no GPU of your own; the key also runs every other model in the catalog.
How many parameters does gpt-oss-20b have?
21B total, 3.6B active per token, per openai/gpt-oss-20b.
What is gpt-oss-20b's context window?
131,072 tokens in its config, per openai/gpt-oss-20b.
Is gpt-oss-20b open source?
Its weights are open on Hugging Face (openai/gpt-oss-20b); the license is Apache-2.0.
What does gpt-oss-20b cost per 100 messages?
$0.068 for 100 chat turns of 2,000 input and 500 output tokens each, at $0.16 input and $0.72 output per million tokens, from prepaid credit with no subscription.
gpt-oss-20b or gpt-oss-120b?
gpt-oss-20b is for speed and price; gpt-oss-120b is for harder reasoning. gpt-oss-20b is $0.16 / $0.72 per million tokens in / out, $0.68 for 1,000 chat turns; gpt-oss-120b is $0.20 / $1.80 per million tokens in / out, $1.30 for 1,000 chat turns. Both run on the same key, so send the same prompt to each.