# GPT-5.4-Pro

GPT-5.4-Pro is an AI model released by OpenAI on Mar 5 2026. Tracked results include 94.4% on GPQA Diamond, 58.7% on Humanity's Last Exam (with tools) and 89.3% on BrowseComp.

## Facts

| Field | Value |
| --- | --- |
| Model | GPT-5.4-Pro |
| Developer | OpenAI |
| Release date | Thursday, Mar 5 2026 |
| Licensing | Proprietary |

## API pricing

All rates in USD per 1,000,000 tokens, pay-as-you-go.

| Tier | Input | Output |
| --- | --- | --- |
| Up to 272K input tokens | $30.00 | $180.00 |

Verified August 18, 2026 against the first-party source: https://developers.openai.com/api/docs/models/gpt-5.4-pro

## Tracked benchmark scores

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| BrowseComp | 89.3% | Lab | Can the AI browse the web and track down hard-to-find answers? Higher is better. |
| Humanity's Last Exam (with tools) | 58.7% | [BenchLM](https://benchlm.ai), retrieved 2026-07-11 | Humanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. |
| ARC-AGI-2 | 83.3% | [BenchLM](https://benchlm.ai), retrieved 2026-07-11 | Puzzle-style tests of abstract reasoning and pattern-finding — the kind of thing people find easy but AIs often struggle with. Higher is better. |
| FrontierMath (Tier 1–3) | 50% | Lab | Very hard, research-level math problems. Tiers 1–3 are the (still extremely difficult) lower tiers. Higher is better. |
| FrontierMath (Tier 4) | 38% | Lab | Very hard, research-level math problems. Tier 4 is the hardest — close to what professional research mathematicians tackle. Higher is better. |
| GPQA Diamond | 94.4% | Lab | Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. |
| GDPval (win/tie rate) | 82% | Lab | How often the AI's work matches or beats a human expert's on real knowledge-work tasks. Higher is better. |

## Questions and answers

### When was GPT-5.4-Pro released?

GPT-5.4-Pro was released by OpenAI on Thursday, Mar 5 2026.

### Who made GPT-5.4-Pro?

GPT-5.4-Pro was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

### How much does GPT-5.4-Pro cost?

GPT-5.4-Pro costs $30.00 per million input tokens and $180.00 per million output tokens through the OpenAI API. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.

### What benchmark scores did GPT-5.4-Pro get?

GPT-5.4-Pro reports 7 tracked benchmark scores — BrowseComp: 89.3%; Humanity's Last Exam (with tools): 58.7%; ARC-AGI-2: 83.3%; FrontierMath (Tier 1–3): 50%; FrontierMath (Tier 4): 38%; GPQA Diamond: 94.4%; GDPval (win/tie rate): 82%. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.

### Is GPT-5.4-Pro open source?

No. GPT-5.4-Pro is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

### What came before and after GPT-5.4-Pro?

OpenAI's previous tracked release was GPT-5.4 on Mar 5 2026. It was followed by GPT-5.4 mini on Mar 17 2026.


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Canonical page: https://aireleasetracker.com/model/openai/gpt-5.4-pro
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.