GPT-5 Pro — OpenAI | Modeldex

GPT-5 Pro

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GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and...

Updated 4 days agoStructured data from Modeldex catalog

VisionAgentic

Knowledge cutoff

Sep 30, 2024(1.6 years ago)

API release

Oct 6, 2025(7 months ago)

Not enough benchmark coverage yet for an Intelligence Index — needs at least 3 results across 2 categories.

Overview

History

GPT-5 Pro became available via the OpenAI API on 2025-10-06.

Training & availability

Training data has a knowledge cutoff of 2024-09-30 — information about events after that date is unlikely to appear in the model's responses. OpenAI has not released the underlying model weights — access is via their hosted API only.

Capabilities

Context window: 128K tokens.
Max output: 272K tokens.
Input modalities: image, text, file.

Recommended for: vision, agentic.

Limitations

The knowledge cutoff is 18 months old — this model will not know about recent events, releases, or API changes.
At $120.00/1M output tokens, this is in the premium tier — verify cost-per-value for high-volume workloads.

Pricing

Input: $15.0000 per 1M tokens
Output: $120.0000 per 1M tokens

Use the cost calculator above to estimate monthly spend for your workload.

Quick start

Minimal example using the openai API. Copy, paste, replace the key.

from openai import OpenAI

client = OpenAI(api_key="sk-...")
resp = client.chat.completions.create(
    model="gpt-5-pro",
    messages=[{"role": "user", "content": "Explain quantum computing in one sentence."}],
)
print(resp.choices[0].message.content)

Cost calculator

Estimate your monthly bill. Presets are typical workload sizes.

Input tokens / month5.0M

@ $15/1M

Output tokens / month2.0M

@ $120/1M

Input cost

$75

5.0M × $15/1M

Output cost

$240

2.0M × $120/1M

Total / month

$315

$3780 / year

Integrations & tooling support

Tool calling: Supported
Structured outputs: Not supported

Price vs quality

Premium pricing

Priced like a frontier model. Quality tier pending more benchmark coverage.

Quality percentile: —
Effective price: $93.75/1M
Pricing breakdown: $15/1M in
$120/1M out

Community ratings

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