GPT-4o is the stronger all-rounder.
Scores updated · 21 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, reasoning 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-4o costs 78% 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-4o pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+31.5points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+17.7points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+2.8points ahead
Where GPT-4 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 21 tests both models report. The winning score is in its model's colour; marks a score checked independently.
FactsGPT-4o
- AA-Omniscience · Non-hallucinationGPT-4o by 31.562.130.6+31.5
- AA-Omniscience · AccuracyGPT-4o by 2.723.721+2.7
Other results16 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.
- MATHGPT-4o by 42.885.342.5+42.8
- AA-OmniscienceGPT-4o by 23.3-10.5-33.8+23.3
- HumanEvalGPT-4o by 23.290.267+23.2
- MGSMGPT-4o by 1690.574.5+16
- Artificial Analysis Coding IndexGPT-4o by 11.124.213.1+11.1
- metr_hcastGPT-4o by 5.32519.7+5.3
- naturalquestions_closedbookGPT-4o by 3.949.645.7+3.9
- NarrativeQAGPT-4o by 2.779.576.8+2.7
- DROPGPT-4o by 2.583.480.9+2.5
- GSM8KGPT-4 by 2.390.993.2+2.3
- AIR-Bench 2024GPT-4 by 1.862.464.2+1.8
- OpenBookQAtie96.896tie
- metr_swaatie99.298.5tie
- AA Intelligencetie7.36.7tie
- MMLUtie73.873.5tie
- metr_re_benchtie00tie
Questions people ask
Which is better, GPT-4o or GPT-4?
GPT-4o wins three of the four areas where both have results: reasoning, facts and following instructions. GPT-4 wins none. They are level on agents.
Which is cheaper?
GPT-4o costs $5.00 per million input tokens and $15.00 per million output tokens; GPT-4 costs $30.00 and $60.00. That makes GPT-4o about 78% cheaper for the same work.
How do you compare the two?
We use the 21 benchmark tests both models have published scores on. The verdict counts the 5 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 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.