GPT-5.4 Pro is the stronger all-rounder.GPT-5.2 is cheaper.
Scores updated · 15 tests both models report · How we compare
Where each one wins
Tests won in each of the four areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Agents rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
GPT-5.2 costs 93% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where GPT-5.4 Pro pulls ahead
- Abstract visual puzzles that people can solveARC-AGI-2+30.4points ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+26.8points ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+23.5points ahead
Where GPT-5.2 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 15 tests both models report. The winning score is in its model's colour; marks a score checked independently.
ReasoningGPT-5.4 Pro
- ARC-AGI-2GPT-5.4 Pro by 30.452.983.3+30.4
- CritPtGPT-5.4 Pro by 18.411.630+18.4
- Humanity's Last ExamGPT-5.4 Pro by 537.742.7+5
- GPQA DiamondGPT-5.4 Pro by 4.190.394.4+4.1
FactsGPT-5.4 Pro
- SimpleQA VerifiedGPT-5.4 Pro by 9.237.146.3+9.2
- Vectara HHEM hallucination ratelower is betterGPT-5.4 Pro by 2.510.88.3+2.5
MathGPT-5.4 Pro
- FrontierMath Tier 4GPT-5.4 Pro by 26.831.758.5+26.8
- FrontierMath Tiers 1-3 (v2)GPT-5.4 Pro by 15.167.482.5+15.1
Other results6 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- frontiermath_tier_4_v1GPT-5.4 Pro by 18.718.837.5+18.7
- HLE (with tools)GPT-5.4 Pro by 13.245.558.7+13.2
- ARC-AGI-1GPT-5.4 Pro by 8.386.294.5+8.3
- vectara_avg_summary_lengthGPT-5.2 by 37.8 rating points186.3148.5+37.8 rating
- vectara_factual_consistencyGPT-5.4 Pro by 2.589.291.7+2.5
- vectara_answer_ratetie100100tie
Questions people ask
Which is better, GPT-5.2 or GPT-5.4 Pro?
GPT-5.4 Pro wins all four areas where both have results: agents, reasoning, facts and math. GPT-5.2 wins none, but costs 93% less.
Which is cheaper?
GPT-5.2 costs $1.75 per million input tokens and $14.00 per million output tokens; GPT-5.4 Pro costs $30.00 and $180.00. That makes GPT-5.2 about 93% cheaper for the same work.
How do you compare the two?
We use the 15 benchmark tests both models have published scores on. The verdict counts the 9 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.