What is the IQ of GPT-4.5 Preview?

GPT-4.5 Preview has an estimated IQ of 83, which ranks #157 out of 161 public models on the AI IQ leaderboard. The score combines seven equally weighted reasoning dimensions using measured benchmark results and conservative estimates for missing coverage.

Is GPT-4.5 Preview open source?

No — GPT-4.5 Preview is a proprietary model. Its weights are not publicly available, so it is used through hosted APIs and products.

When was GPT-4.5 Preview released?

GPT-4.5 Preview was publicly released on February 27, 2025.

How large is the context window of GPT-4.5 Preview?

GPT-4.5 Preview supports a context window of 128,000 tokens — the amount of text it can consider in a single request.

OpenAI

GPT-4.5 Preview

Public AI IQ model profile with source-backed benchmark results and derived ranking context.

IQ

83

EQ

n/a

Effective Cost

n/a

IQ Rank

#157

Release and Capabilities

Public release	2025-02-27
Context window	128,000 tokens

Measured Coverage and Estimates

GPT 4.5 has 3 of 39 tracked IQ benchmark inputs across 2 of 7 dimensions. Raw benchmark tables contain source-backed results only. Derived IQ combines all six dimensions using the shared scoring methodology, including estimates where direct coverage is incomplete.

Among dimensions with direct benchmark coverage, this profile's highest estimated scores are Academic Reasoning (IQ 119) and Abstract Reasoning (IQ 71). These dimension estimates can include statistical adjustments or predecessor priors; they are not raw benchmark percentages or claims of real-world task success.

Benchmark versions, evaluation harnesses, and coverage affect comparisons; a missing result is not a score of zero. See the scoring methodology for estimation and uncertainty limits.

IQ Dimensions

Dimension	IQ	Coverage
Abstract Reasoning	71	2/5
Mathematical Reasoning	70	0/5
Academic Reasoning	119	1/6
Programmatic Reasoning	78	0/6
Computer Use	70	0/5
Reliability	84	0/6
Knowledge Work	84	0/6

Benchmark Results

Benchmark	Score	Dimension
ARC-AGI-1	10.3	Abstract Reasoning
ARC-AGI-2	0.8	Abstract Reasoning
MMLU-Pro	86.1	Academic Reasoning

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Frequently Asked Questions

What is the IQ of GPT-4.5 Preview?: GPT-4.5 Preview has an estimated IQ of 83, which ranks #157 out of 161 public models on the AI IQ leaderboard. The score combines seven equally weighted reasoning dimensions using measured benchmark results and conservative estimates for missing coverage.
Is GPT-4.5 Preview open source?: No — GPT-4.5 Preview is a proprietary model. Its weights are not publicly available, so it is used through hosted APIs and products.
When was GPT-4.5 Preview released?: GPT-4.5 Preview was publicly released on February 27, 2025.
How large is the context window of GPT-4.5 Preview?: GPT-4.5 Preview supports a context window of 128,000 tokens — the amount of text it can consider in a single request.