OpenAI: gpt-oss-120b

3 providers live

openai/gpt-oss-120b

3 live providers
100% uptime
0.23 s first token
481 tok/s output

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized to run on a single H100 GPU with native MXFP4 quantization. The model supports configurable reasoning depth, full chain-of-thought access, and native tool use, including function calling, browsing, and structured output generation.

Context: 128K; tokens
Max output: 32K; tokens
Input: $0.05; per million tokens
Output: $0.25; per million tokens

Providers

Ranked by price and speed. Requests go to the best healthy provider, then fail over down the list.Benchmarks

Live providers of gpt-oss-120b, in the router's order
Who answers now	Input per 1M	First token
llm.buzzpicked	$0.05	5.14 s
Novita	$0.05	0.58 s
ScalewayEU	$0.1729	0.23 s

llm.buzz answers now: first in the router's order.

First token is the 24-hour median. If the pick fails, the next one answers at its own price.

#	Provider	Input	Output	Cache read	Latency	Throughput	Uptime (3d)
1	llm.buzzAutoNon-EU Data policy not declared	$0.05	$0.25	n/a	5.14 s	481 tok/s	98.6%
2	NovitaNon-EU Data policy not declared	$0.05	$0.25	n/a	0.58 s	278 tok/s	94.4%
3	ScalewayEU Data policy not declared	$0.1729	$0.6915	n/a	0.23 s	134 tok/s	100%

Want to serve this model?Become a provider

Price history

Input price since Oct 21, 2026, in USD per million tokens.

Novita
Scaleway

Data table

Provider	From	Input	Output
Novita	Oct 21, 2026	$0.05	$0.25
Scaleway	Oct 21, 2026	$0.1733	$0.6931
Scaleway	Oct 22, 2026	$0.1736	$0.6943
Scaleway	Oct 22, 2026	$0.1732	$0.6925
Scaleway	Oct 23, 2026	$0.173	$0.6918
Scaleway	Oct 26, 2026	$0.1729	$0.6915

Performance

Last 24 hours, from llm.buzz's test requests

Throughput (tok/s)

llm.buzz481 tok/s
Novita278 tok/s
Scaleway134 tok/s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 07:00	481 tok/s	481 tok/s	481 tok/s
llm.buzz	Oct 26, 12:00	54 tok/s	54 tok/s	54 tok/s
llm.buzz	Oct 26, 21:00	334 tok/s	334 tok/s	334 tok/s
llm.buzz	Oct 27, 01:00	481 tok/s	481 tok/s	481 tok/s
llm.buzz	Last 24 hours	481 tok/s	54 tok/s	54 tok/s
Novita	Oct 26, 07:00	278 tok/s	278 tok/s	278 tok/s
Novita	Oct 26, 11:00	278 tok/s	278 tok/s	278 tok/s
Novita	Oct 26, 15:00	278 tok/s	278 tok/s	278 tok/s
Novita	Oct 26, 20:00	278 tok/s	278 tok/s	278 tok/s
Novita	Oct 27, 01:00	232 tok/s	232 tok/s	232 tok/s
Novita	Last 24 hours	278 tok/s	232 tok/s	232 tok/s
Scaleway	Oct 26, 07:00	112 tok/s	112 tok/s	112 tok/s
Scaleway	Oct 26, 11:00	54 tok/s	54 tok/s	54 tok/s
Scaleway	Oct 26, 15:00	78 tok/s	78 tok/s	78 tok/s
Scaleway	Oct 26, 19:00	134 tok/s	134 tok/s	134 tok/s
Scaleway	Oct 27, 00:00	161 tok/s	161 tok/s	161 tok/s
Scaleway	Oct 27, 04:00	193 tok/s	193 tok/s	193 tok/s
Scaleway	Last 24 hours	134 tok/s	54 tok/s	54 tok/s

Latency (time to first token)

llm.buzz5.14 s
Novita0.58 s
Scaleway0.23 s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 07:00	2.07 s	2.07 s	2.07 s
llm.buzz	Oct 26, 12:00	31.8 s	31.8 s	31.8 s
llm.buzz	Oct 26, 16:00	55.0 s	55.0 s	55.0 s
llm.buzz	Oct 26, 21:00	5.14 s	5.14 s	5.14 s
llm.buzz	Oct 27, 01:00	2.98 s	2.98 s	2.98 s
llm.buzz	Last 24 hours	5.14 s	55.0 s	55.0 s
Novita	Oct 26, 07:00	0.58 s	0.58 s	0.58 s
Novita	Oct 26, 11:00	0.58 s	0.58 s	0.58 s
Novita	Oct 26, 15:00	0.58 s	0.58 s	0.58 s
Novita	Oct 26, 20:00	0.58 s	0.58 s	0.58 s
Novita	Oct 27, 01:00	0.48 s	0.48 s	0.48 s
Novita	Last 24 hours	0.58 s	0.58 s	0.58 s
Scaleway	Oct 26, 07:00	0.23 s	0.23 s	0.23 s
Scaleway	Oct 26, 11:00	1.72 s	1.72 s	1.72 s
Scaleway	Oct 26, 15:00	1.20 s	1.20 s	1.20 s
Scaleway	Oct 26, 19:00	0.19 s	0.19 s	0.19 s
Scaleway	Oct 27, 00:00	0.23 s	0.23 s	0.23 s
Scaleway	Oct 27, 04:00	0.19 s	0.19 s	0.19 s
Scaleway	Last 24 hours	0.23 s	1.72 s	1.72 s

Uptime

Last 72 hours, by hour

Best provider 100%

This model

llm.buzz

Novita

Scaleway

Up: 95% or more served
Degraded: 85% to 95%
Down: below 85%
No data
From llm.buzz's test requests

Questions

How much does OpenAI: gpt-oss-120b cost?

OpenAI: gpt-oss-120b costs $0.05 per million input tokens and $0.25 per million output tokens at llm.buzz, the provider requests go to first. Each provider sets its own price, and you pay the price of the provider that answered.

Do providers train on my prompts?

Each provider declares it, and the table above shows every declaration. You can limit a request to providers that keep nothing, or to providers in the EU.

Can I serve OpenAI: gpt-oss-120b myself?

Yes. Apply as a provider, add your endpoint and list this model at your price. It goes live once the automated check passes.

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Call it

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.llm.buzz/api/v1",
    api_key=os.environ["LLM_BUZZ_KEY"],
)
reply = client.chat.completions.create(
    model="openai/gpt-oss-120b",
    messages=[{"role": "user", "content": "Hello"}],
)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.llm.buzz/api/v1",
  apiKey: process.env.LLM_BUZZ_KEY,
});
const reply = await client.chat.completions.create({
  model: "openai/gpt-oss-120b",
  messages: [{ role: "user", content: "Hello" }],
});

curl https://api.llm.buzz/api/v1/chat/completions \
  -H "Authorization: Bearer $LLM_BUZZ_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-oss-120b",
       "messages": [{"role": "user", "content": "Hello"}]}'

Endpoints

POST /api/v1/chat/completionsPOST /api/v1/responsesPOST /api/v1/messages

Authentication

Send your llm.buzz key as a Bearer token: Authorization: Bearer $LLM_BUZZ_KEY. Create keys in the console. The same key calls every model; each request pays the price of the provider that answered it.

More in Authentication and the API reference.

Call OpenAI: gpt-oss-120b with one keyEach request pays the price of the provider that answered it.

Get API key

OpenAI: gpt-oss-120b

Providers

Price history

Performance

Throughput (tok/s)

Latency (time to first token)

Uptime

Questions

Similar models

Call it

Authentication

README