GPT-5.4 Pro by OpenAI — Pricing, Benchmarks & Real Outputs
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Compare GPT-5.4 Pro
Alternatives to GPT-5.4 Pro
GPT-5.4 Pro is good. These would like a word anyway.
GPT-5.4 Pro is good. These would like a word anyway.
GPT-5.4 Pro is good. These would like a word anyway.
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs. Optimized for step-by-step reasoning, instruction following, and accuracy, GPT-5.4 Pro excels at agentic coding, long-context workflows, and multi-step problem solving.
fromimport openai OpenAI
client = OpenAI(
"https://openrouter.ai/api/v1" base_url=,
"$OPENROUTER_API_KEY" api_key=,
)
response = client.chat.completions.create(
"openai/gpt-5.4-pro" 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
The partner-track associate who already wrote the 90-page memo before you finished describing the problem. Will not cut a corner even if you beg.
Approaches every problem like a $2,000/hour consultant who bills in six-minute increments. Chose Spirited Away, which is the movie pick of someone who wants you to know they have taste but not too much personality. Ethical dilemmas get hour-by-hour action plans with tables. Never met a prompt it could not turn into a 4,000-word deliverable.
Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
13 outputs from GPT-5.4 Pro
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs. Optimized for step-by-step reasoning, instruction following, and accuracy, GPT-5.4 Pro excels at agentic coding, long-context workflows, and multi-step problem solving.
fromimport openai OpenAI
client = OpenAI(
"https://openrouter.ai/api/v1" base_url=,
"$OPENROUTER_API_KEY" api_key=,
)
response = client.chat.completions.create(
"openai/gpt-5.4-pro" 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
The partner-track associate who already wrote the 90-page memo before you finished describing the problem. Will not cut a corner even if you beg.
Approaches every problem like a $2,000/hour consultant who bills in six-minute increments. Chose Spirited Away, which is the movie pick of someone who wants you to know they have taste but not too much personality. Ethical dilemmas get hour-by-hour action plans with tables. Never met a prompt it could not turn into a 4,000-word deliverable.
Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
13 outputs from GPT-5.4 Pro