OpenAI: GPT-5.4

2 providers live

openai/gpt-5.4

→

2 live providers
100% uptime
1.00 s first token
65 tok/s output

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-context reasoning, coding, and multimodal analysis within the same workflow. The model delivers improved performance in coding, document understanding, tool use, and instruction following. It is designed as a strong default for both general-purpose tasks and software engineering, capable of generating production-quality code, synthesizing information across multiple sources, and executing complex multi-step workflows with fewer iterations and greater token efficiency.

Context: 1.1M; tokens
Max output: 128K; tokens
Input: $2.50; per million tokens
Output: $15.00; 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-5.4, in the router's order
Who answers now	Input per 1M	First token
llm.buzzpicked	$2.50	1.72 s
OpenAI	$2.50	1.00 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	$2.50	$15.00	$0.25	1.72 s	65 tok/s	78.9%
2	OpenAINon-EU Data policy not declared	$2.50	$15.00	$0.25	1.00 s	37 tok/s	100%

Want to serve this model?Become a provider

Price history

No price changes since Oct 22, 2026.

OpenAI$2.50 in, $15.00 out

Performance

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

Throughput (tok/s)

llm.buzz65 tok/s
OpenAI37 tok/s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 08:00	93 tok/s	93 tok/s	93 tok/s
llm.buzz	Oct 26, 13:00	54 tok/s	54 tok/s	54 tok/s
llm.buzz	Oct 26, 18:00	37 tok/s	37 tok/s	37 tok/s
llm.buzz	Oct 26, 23:00	65 tok/s	65 tok/s	65 tok/s
llm.buzz	Last 24 hours	65 tok/s	37 tok/s	37 tok/s
OpenAI	Oct 26, 09:00	37 tok/s	37 tok/s	37 tok/s
OpenAI	Oct 26, 14:00	37 tok/s	37 tok/s	37 tok/s
OpenAI	Oct 26, 18:00	45 tok/s	45 tok/s	45 tok/s
OpenAI	Oct 26, 22:00	45 tok/s	45 tok/s	45 tok/s
OpenAI	Oct 27, 03:00	31 tok/s	31 tok/s	31 tok/s
OpenAI	Last 24 hours	37 tok/s	31 tok/s	31 tok/s

Latency (time to first token)

llm.buzz1.72 s
OpenAI1.00 s

Data table

Provider	From (UTC)	p50	p90	p99
llm.buzz	Oct 26, 08:00	2.07 s	2.07 s	2.07 s
llm.buzz	Oct 26, 13:00	2.07 s	2.07 s	2.07 s
llm.buzz	Oct 26, 18:00	1.72 s	1.72 s	1.72 s
llm.buzz	Oct 26, 23:00	1.72 s	1.72 s	1.72 s
llm.buzz	Last 24 hours	1.72 s	2.07 s	2.07 s
OpenAI	Oct 26, 09:00	1.00 s	1.00 s	1.00 s
OpenAI	Oct 26, 14:00	1.20 s	1.20 s	1.20 s
OpenAI	Oct 26, 18:00	1.44 s	1.44 s	1.44 s
OpenAI	Oct 26, 22:00	1.00 s	1.00 s	1.00 s
OpenAI	Oct 27, 03:00	0.83 s	0.83 s	0.83 s
OpenAI	Last 24 hours	1.00 s	1.44 s	1.44 s

Uptime

Last 72 hours, by hour

Best provider 100%

This model

llm.buzz

OpenAI

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-5.4 cost?

OpenAI: GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens at llm.buzz, the provider requests go to first, with cache reads at $0.25 per million tokens.

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-5.4 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-5.4",
    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-5.4",
  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-5.4",
       "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-5.4 with one keyEach request pays the price of the provider that answered it.

Get API key