GPT-4o vs Grok 3 Mini Reasoning
Wins 1 of 6 areas
Facts
Wins 3 of 6 areas
Coding · Reasoning · Following instructions
Grok 3 Mini Reasoning wins more areas, narrowly.GPT-4o is better at facts.
Scores updated · 22 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 thinking02Grok 3 Mini Reasoning2 of 3 tests · 1 tie
- CodingWriting and fixing software02Grok 3 Mini Reasoning2 of 2 tests
- Following instructionsDoing exactly what it is asked01Grok 3 Mini Reasoning1 of 1 test
- FactsGetting facts right instead of making them up21GPT-4o2 of 3 tests
- AgentsCarrying out multi-step tasks on its own00Even0 each · 1 tie
- Long documentsFinding answers in very long texts00Even0 each · 1 tie
Agents, 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.
Grok 3 Mini Reasoning costs 96% 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 Grok 3 Mini Reasoning pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+26.5points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+12.1points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+9.9points ahead
Where GPT-4o pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+8.6points ahead
- Short factual questions, answered correctlySimpleQA Verified+4.9points ahead
Every test, side by side
All 22 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGrok 3 Mini Reasoning
- Terminal-Bench HardGrok 3 Mini Reasoning by 9.18.317.4+9.1
- SciCodeGrok 3 Mini Reasoning by 7.333.340.6+7.3
ReasoningGrok 3 Mini Reasoning
- GPQA DiamondGrok 3 Mini Reasoning by 26.552.679.1+26.5
- Humanity's Last ExamGrok 3 Mini Reasoning by 9.21.811+9.2
- CritPttie00.6tie
FactsGPT-4o
- AA-Omniscience · Non-hallucinationGrok 3 Mini Reasoning by 12.162.174.2+12.1
- AA-Omniscience · AccuracyGPT-4o by 8.623.715.1+8.6
- SimpleQA VerifiedGPT-4o by 4.92621.1+4.9
Following instructionsGrok 3 Mini Reasoning
- IFBenchGrok 3 Mini Reasoning by 9.93645.9+9.9
Other results11 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.
- AIME 2025Grok 3 Mini Reasoning by 79.111.790.8+79.1
- τ²-Bench Telecom (AA run)Grok 3 Mini Reasoning by 61.528.990.4+61.5
- livecodebench_mediumGrok 3 Mini Reasoning by 53.832.185.9+53.8
- livecodebench_hardGrok 3 Mini Reasoning by 46.64.551.1+46.6
- LiveCodeBenchGrok 3 Mini Reasoning by 42.138.380.4+42.1
- AA Agentic IndexGrok 3 Mini Reasoning by 22.88.431.2+22.8
- livecodebench_easyGrok 3 Mini Reasoning by 15.682.598.1+15.6
- ARC-AGI-1Grok 3 Mini Reasoning by 124.516.5+12
- AA IntelligenceGrok 3 Mini Reasoning by 7.37.314.6+7.3
- AA-OmniscienceGrok 3 Mini Reasoning by 3.7-10.5-6.8+3.7
- Artificial Analysis Coding IndexGrok 3 Mini Reasoning by 124.225.2+1
Questions people ask
Which is better, GPT-4o or Grok 3 Mini Reasoning?
Grok 3 Mini Reasoning wins three of the six areas where both have results: coding, reasoning and following instructions. GPT-4o wins facts. They are level on agents and long documents.
Which is better for coding?
Grok 3 Mini Reasoning. It wins 2 of the 2 coding tests both models report; GPT-4o wins none.
Which is cheaper?
GPT-4o costs $5.00 per million input tokens and $15.00 per million output tokens; Grok 3 Mini Reasoning costs $0.30 and $0.50. That makes Grok 3 Mini Reasoning about 96% cheaper for the same work.
How do you compare the two?
We use the 22 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 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.