A.X-K2 vs Solar Mini4
Wins 2 of 5 areas
Reasoning · Facts
Wins 3 of 5 areas
Coding · Agents · Long documents
Solar Mini4 is the stronger all-rounder.A.X-K2 is better at reasoning.
Scores updated · 10 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.
- AgentsCarrying out multi-step tasks on its own02Solar Mini42 of 2 tests
- CodingWriting and fixing software01Solar Mini41 of 1 test
- Long documentsFinding answers in very long texts01Solar Mini41 of 1 test
- ReasoningHard problems that need careful thinking20A.X-K22 of 2 tests
- FactsGetting facts right instead of making them up10A.X-K21 of 2 tests · 1 tie
Coding and long documents 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.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Solar Mini4 pulls ahead
Where A.X-K2 pulls ahead
- Research-level physics problemsCritPt+7.5points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+3.8points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+2.8points ahead
Every test, side by side
All 10 tests both models report. The winning score is in its model's colour; marks a score checked independently.
AgentsSolar Mini4
- GDPValSolar Mini4 by 6.323.229.5+6.3
- Terminal-Bench 4.0Solar Mini4 by 101+1
ReasoningA.X-K2
- CritPtA.X-K2 by 7.58.91.4+7.5
- Humanity's Last ExamA.X-K2 by 3.829.625.8+3.8
FactsA.X-K2
- AA-Omniscience · Non-hallucinationA.X-K2 by 2.86764.2+2.8
- AA-Omniscience · Accuracytie18.618.4tie
Other results2 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.
- AA IntelligenceSolar Mini4 by 2.621.524.1+2.6
- AA-OmniscienceA.X-K2 by 2.6-8.2-10.8+2.6
Questions people ask
Which is better, A.X-K2 or Solar Mini4?
Solar Mini4 wins three of the five areas where both have results: coding, agents and long documents. A.X-K2 wins reasoning and facts.
Which is better for coding?
Solar Mini4. It wins the one coding test both models report.
How do you compare the two?
We use the 10 benchmark tests both models have published scores on. The verdict counts the 8 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 2 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.