GPT-5 vs Grok 3
Wins 7 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents · Following instructions
Wins 0 of 7 areas
—
GPT-5 is the stronger all-rounder.
Scores updated · 27 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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 thinking50GPT-55 of 5 tests
- CodingWriting and fixing software20GPT-52 of 2 tests
- FactsGetting facts right instead of making them up21GPT-52 of 3 tests
- AgentsCarrying out multi-step tasks on its own10GPT-51 of 1 test
- Images and chartsUnderstanding pictures, charts and video10GPT-51 of 1 test
- Long documentsFinding answers in very long texts10GPT-51 of 1 test
- Following instructionsDoing exactly what it is asked10GPT-51 of 1 test
Agents, images and charts, long documents 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 53% 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 pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+26.2points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+24.4points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+21.2points ahead
Where Grok 3 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 27 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5
- Terminal-Bench HardGPT-5 by 21.232.611.4+21.2
- SciCodeGPT-5 by 6.142.936.8+6.1
ReasoningGPT-5
- Humanity's Last ExamGPT-5 by 24.428.54.1+24.4
- SimpleBenchGPT-5 by 20.656.736.1+20.6
- GPQA DiamondGPT-5 by 16.185.469.3+16.1
- ARC-AGI-2GPT-5 by 9.99.90+9.9
- CritPtGPT-5 by 5.75.70+5.7
FactsGPT-5
- AA-Omniscience · AccuracyGPT-5 by 11.440.328.9+11.4
- Vectara HHEM hallucination ratelower is betterGrok 3 by 9.315.15.8+9.3
- AA-Omniscience · Non-hallucinationGPT-5 by 5.117.812.7+5.1
Other results13 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 by 60.265.75.5+60.2
- BrowseComp-ZHGPT-5 by 52.26310.8+52.2
- τ²-Bench Telecom (AA run)GPT-5 by 3684.848.8+36
- AA-OmniscienceGPT-5 by 24.5-8.7-33.2+24.5
- Artificial Analysis Coding IndexGPT-5 by 1837.819.8+18
- frontiermath_tier_4_v1GPT-5 by 12.512.50+12.5
- AA IntelligenceGPT-5 by 10.92312.1+10.9
- vectara_factual_consistencyGrok 3 by 9.384.994.2+9.3
- vectara_answer_rateGPT-5 by 6.999.993+6.9
- vectara_avg_summary_lengthGPT-5 by 66.8 rating points162.795.9+66.8 rating
- LiveCodeBenchGPT-5 by 4.183.579.4+4.1
- AA Agentic IndexGPT-5 by 1.926.524.6+1.9
- AIME 2025GPT-5 by 1.394.693.3+1.3
Questions people ask
Which is better, GPT-5 or Grok 3?
GPT-5 wins all seven areas where both have results: coding, agents, reasoning, facts, images and charts, long documents and following instructions. Grok 3 wins none.
Which is better for coding?
GPT-5. It wins 2 of the 2 coding tests both models report; Grok 3 wins none.
Which is cheaper?
GPT-5 costs $1.25 per million input tokens and $10.00 per million output tokens; Grok 3 costs $4.00 and $20.00. That makes GPT-5 about 53% cheaper for the same work.
How do you compare the two?
We use the 27 benchmark tests both models have published scores on. The verdict counts the 14 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 13 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.