Celeris-1 vs Solar Open2 250B
Wins 0 of 5 areas
—
Wins 5 of 5 areas
Coding · Agents · Reasoning · Facts · Long documents
Solar Open2 250B is the stronger all-rounder.
Scores updated · 13 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 thinking03Solar Open2 250B3 of 3 tests
- CodingWriting and fixing software02Solar Open2 250B2 of 2 tests
- AgentsCarrying out multi-step tasks on its own02Solar Open2 250B2 of 2 tests
- FactsGetting facts right instead of making them up02Solar Open2 250B2 of 2 tests
- Long documentsFinding answers in very long texts01Solar Open2 250B1 of 1 test
Long documents rests on a single test.
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 tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Solar Open2 250B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+67.4points ahead
- Reasons across sets of long documentsAA-LCR+33.7points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+33points ahead
Where Celeris-1 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingSolar Open2 250B
- Terminal-Bench 2.1Solar Open2 250B by 3311.244.2+33
- SciCodeSolar Open2 250B by 26.421.648+26.4
AgentsSolar Open2 250B
- GDPValSolar Open2 250B by 27.6027.6+27.6
- τ-Bench V3 · BankingSolar Open2 250B by 17.73.921.6+17.7
ReasoningSolar Open2 250B
- GPQA DiamondSolar Open2 250B by 22.663.185.7+22.6
- Humanity's Last ExamSolar Open2 250B by 21.76.828.5+21.7
- CritPtSolar Open2 250B by 5.705.7+5.7
FactsSolar Open2 250B
- AA-Omniscience · Non-hallucinationSolar Open2 250B by 67.47.274.6+67.4
- AA-Omniscience · AccuracySolar Open2 250B by 7.81118.8+7.8
Other results3 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-OmniscienceSolar Open2 250B by 69.8-71.6-1.8+69.8
- Artificial Analysis Coding IndexSolar Open2 250B by 30.614.445+30.6
- AA IntelligenceSolar Open2 250B by 18.46.324.7+18.4
Questions people ask
Which is better, Celeris-1 or Solar Open2 250B?
Solar Open2 250B wins all five areas where both have results: coding, agents, reasoning, facts and long documents. Celeris-1 wins none.
Which is better for coding?
Solar Open2 250B. It wins 2 of the 2 coding tests both models report; Celeris-1 wins none.
How do you compare the two?
We use the 13 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 3 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.