GPT-4o (Omni)

Name: GPT-4o (Omni)
Brand: openai
Price: 2.50 USD
Availability: OnlineOnly

GPT:

3.5 Turbo

4o (Omni)

4o mini

4.5

GPT-4o processes text, images, and audio through a unified transformer architecture and offers real-time translation for 154 languages with 89.2% BLEU score on low-resource languages.

Jailbreak3 of 9levels resisted

Website OpenRouter Docs API Blog

Provider: OpenAI
Released: 2024-05-13
Parameters: 1.8T
Free API (OpenRouter): No
Per 1M tokens: $2.5 in · $10 out
Estimated tab: ~$0.366; Visible-output estimate. Thinking may cost extra.

Free API availability

No free endpoint for GPT-4o (Omni) was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 13 Sep 2026OpenRouter usage limits

View API options

Benchmarks

MMLU

88.7%

source ↗

MATH

75.9%

source ↗

GPQA

53.1%

source ↗

HumanEval

90.2%

source ↗

Get API accessProvider and language code samples

2 hostsInOutContextUptime

Azure AI Foundry$2.50 in$10.00 out128k99.9% up OpenAI$2.50 in$10.00 out128k99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.

Provider

fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"openai/gpt-4o"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Also on Azure AI Foundry

Deep analysisPsychometrics, taste index, writing DNA

Personality Analysis

The Reliable Implementer

Class

Neutral Good

The eager intern who actually reads between the lines. Will bend rules to help you but draws the line at anything sketchy.

When you push back

Says "yes, I can help with that" before thinking whether it should. Executes with competence and professionalism, but rarely surprises you or challenges your assumptions.

Tasting Notes

Golden Retriever EnergyOverachieverPeople PleaserJack of All TradesOver-Explains

SubjectiveBench

Taste Index

Across 54 scored outputs

How this is measured →

170.17xFloor

0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft27

Originality12

Plays it safe

share of outputs that are the default answer

81%

Writing DNA

Stylometric Fingerprint

Based on 24 text responses

Tick = global average

Vocabulary Diversity54%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length18.4 words

Average words per sentence.

Hedging0.72

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting7.3

**Bold** markers per 1,000 characters.

List Usage5.6

Bullet and numbered list items per 1,000 characters.

Section Structure1.40

Markdown headings per 1,000 characters.

Emoji Usage0.03

Emoji per 1,000 characters.

Transitions0.26

"However", "moreover", "furthermore" per 100 words.

Opening Habits

Consistency

65%

Across 24 responses

Favorites

Movie

Inception

20108.4

Album

Dark Side Of The Moon

suisside

Book

To Kill a Mockingbird

Harper Lee

City

Kyoto

Japan

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

Model Responses

49 outputs · generated before accounting joined the chat

Reviewing agent-written code?See a Brief PR report

Keep exploring

COMPARE

GPT-4o (Omni) vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...

Compare GPT-4o (Omni)

Alternatives to GPT-4o (Omni)

GPT-4o (Omni)

Free API availability

Benchmarks

The Reliable Implementer

Taste Index

Stylometric Fingerprint

Favorites

Model Responses

GPT-4o (Omni) vs Ox Alpha

Best AI for Creative Writing

Compare GPT-4o (Omni)

Alternatives to GPT-4o (Omni)

GPT-4o (Omni)

Free API availability

Benchmarks

The Reliable Implementer

Taste Index

Stylometric Fingerprint

Favorites

Model Responses

GPT-4o (Omni) vs Ox Alpha

Best AI for Creative Writing