Overview
GPT-5 Pro is OpenAI's highest-capability tier of the GPT-5 family, launched on 2025-08-07 alongside GPT-5 itself. It is a variant of GPT-5 that, in OpenAI's words, 'thinks for ever longer' by using scaled but efficient parallel test-time compute to produce the most comprehensive and accurate answers. It first shipped inside ChatGPT for Pro subscribers, then became available in the API as the gpt-5-pro model on 2025-10-06.
Because GPT-5 Pro spends far more compute per query than standard GPT-5, it targets research-grade and high-stakes problems where a better answer is worth the extra latency and cost. On launch it set a new state of the art on GPQA Diamond, scoring 88.4% without tools — the best result in the GPT-5 family at the time. It accepts text and image input and returns text.
GPT-5 Pro has since been superseded by later Pro tiers (GPT-5.1 Pro, GPT-5.2 Pro, and beyond), so this original August 2025 release is now a legacy model. Its specs and benchmarks are documented here for reference.
| Released | 2025-08-07 |
|---|---|
| License | Proprietary |
| Weights | API only |
| Parameters | Undisclosed |
| Context | 400K |
| Max output | 128K |
| Architecture | Undisclosed (reasoning model with parallel test-time compute) |
| Modalities | Text, Vision |
| Status | Deprecated |
Benchmarks
Scores on a 0–100 scale (25-point gridlines); higher is better. Each benchmark links to its published source.
Pricing
| Input | $15.00 / 1M tokens |
|---|---|
| Output | $120.00 / 1M tokens |
API price for the gpt-5-pro model (available from 2025-10-06).
Strengths
- Highest answer quality in the original GPT-5 family via parallel test-time compute
- State-of-the-art GPQA Diamond (PhD-level science) score of 88.4% without tools at launch
- Strong competition-math performance (100% on AIME 2025 with Python tools)
- Large 400K total context window with 128K max output
- Accepts image input in addition to text
Best for
- Research-grade science, math, and finance problems where answer quality outweighs cost
- High-stakes professional work (legal, medical, technical analysis) needing the most thorough reasoning
- Difficult coding and debugging tasks that benefit from extended deliberation
- Verifying or stress-testing answers from faster, cheaper models
How to access
| Provider | Model ID |
|---|---|
| OpenAI API ↗ | gpt-5-pro |
GPT Pro — every version
The full lineage of the GPT Pro line, newest first. Every version has its own page — click any to compare specs, benchmarks and pricing.
| Version | Released | Context | License |
|---|---|---|---|
| GPT-5.5 Procurrent | 2026-04-23 | 1.05M | Proprietary |
| GPT-5.4 Pro | 2026-03-05 | — | Proprietary |
| GPT-5.2 Pro | 2025-12-11 | — | Proprietary |
| GPT-5.1 Pro | 2025-11-19 | — | Proprietary |
| GPT-5 Pro | 2025-08-07 | — | Proprietary |
FAQ
What is GPT-5 Pro?
GPT-5 Pro is the highest-capability tier of OpenAI's GPT-5 family, released on 2025-08-07. It is a variant of GPT-5 that uses scaled, efficient parallel test-time compute to think longer and deliver the most comprehensive and accurate answers on hard problems.
How is GPT-5 Pro different from GPT-5?
GPT-5 Pro runs the same underlying GPT-5 model but spends much more test-time compute per query, trading higher latency and cost for better answer quality. At launch it scored 88.4% on GPQA Diamond without tools, the best in the GPT-5 family.
How much does GPT-5 Pro cost in the API?
In the OpenAI API, the gpt-5-pro model is priced at $15.00 per 1M input tokens and $120.00 per 1M output tokens — roughly 12x the output price of standard GPT-5. It became available in the API on 2025-10-06.
Is GPT-5 Pro still the latest model?
No. GPT-5 Pro (August 2025) is a legacy model that has been superseded by later Pro tiers such as GPT-5.1 Pro, GPT-5.2 Pro, and newer releases. Check OpenAI's current model list for the most up-to-date Pro tier.