GPT-5.4 Pro is the stronger all-rounder.GPT-5 is cheaper.
Scores updated · 16 tests both models report · How we compare
Where each one wins
Tests won in each of the five 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.
- ReasoningHard problems that need careful thinking04GPT-5.4 Pro4 of 4 tests
- MathCompetition and research-level math02GPT-5.4 Pro2 of 2 tests
- AgentsCarrying out multi-step tasks on its own01GPT-5.4 Pro1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
- Following instructionsDoing exactly what it is asked00Even0 each · 1 tie
Agents and following instructions rest on a single test each.
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 costs 95% 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+73.4points ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+36.5points ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+34.4points ahead
Where GPT-5 pulls ahead
- Short factual questions, answered correctlySimpleQA Verified+3.8points ahead
Every test, side by side
All 16 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 73.49.983.3+73.4
- CritPtGPT-5.4 Pro by 24.35.730+24.3
- Humanity's Last ExamGPT-5.4 Pro by 14.228.542.7+14.2
- GPQA DiamondGPT-5.4 Pro by 985.494.4+9
FactsEven
- Vectara HHEM hallucination ratelower is betterGPT-5.4 Pro by 6.815.18.3+6.8
- SimpleQA VerifiedGPT-5 by 3.850.146.3+3.8
MathGPT-5.4 Pro
- FrontierMath Tier 4GPT-5.4 Pro by 36.521.958.5+36.5
- FrontierMath Tiers 1-3 (v2)GPT-5.4 Pro by 27.155.482.5+27.1
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.
- ARC-AGI-1GPT-5.4 Pro by 28.865.794.5+28.8
- frontiermath_tier_4_v1GPT-5.4 Pro by 2512.537.5+25
- HLE (with tools)GPT-5.4 Pro by 23.535.258.7+23.5
- vectara_factual_consistencyGPT-5.4 Pro by 6.884.991.7+6.8
- vectara_avg_summary_lengthGPT-5 by 14.2 rating points162.7148.5+14.2 rating
- vectara_answer_ratetie99.9100tie
Questions people ask
Which is better, GPT-5 or GPT-5.4 Pro?
GPT-5.4 Pro wins three of the five areas where both have results: agents, reasoning and math. GPT-5 wins none, but costs 95% less. They are level on facts and following instructions.
Which is cheaper?
GPT-5 costs $1.25 per million input tokens and $10.00 per million output tokens; GPT-5.4 Pro costs $30.00 and $180.00. That makes GPT-5 about 95% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 10 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.