Celeris-1 vs K2 Horizon 375B A23B
Wins 0 of 5 areas
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Wins 5 of 5 areas
Coding · Agents · Reasoning · Facts · Long documents
K2 Horizon 375B A23B is the stronger all-rounder.
Scores updated · 14 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 own03K2 Horizon 375B A23B3 of 3 tests
- ReasoningHard problems that need careful thinking03K2 Horizon 375B A23B3 of 3 tests
- CodingWriting and fixing software02K2 Horizon 375B A23B2 of 2 tests
- FactsGetting facts right instead of making them up02K2 Horizon 375B A23B2 of 2 tests
- Long documentsFinding answers in very long texts01K2 Horizon 375B A23B1 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 K2 Horizon 375B A23B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+66.9points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+60.7points ahead
- Reasons across sets of long documentsAA-LCR+42points ahead
Where Celeris-1 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 14 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingK2 Horizon 375B A23B
- Terminal-Bench 2.1K2 Horizon 375B A23B by 60.711.271.9+60.7
- SciCodeK2 Horizon 375B A23B by 21.321.642.9+21.3
AgentsK2 Horizon 375B A23B
- GDPValK2 Horizon 375B A23B by 43043+43
- τ-Bench V3 · BankingK2 Horizon 375B A23B by 30.33.934.2+30.3
- Terminal-Bench 4.0K2 Horizon 375B A23B by 1.501.5+1.5
ReasoningK2 Horizon 375B A23B
- Humanity's Last ExamK2 Horizon 375B A23B by 25.26.832+25.2
- GPQA DiamondK2 Horizon 375B A23B by 24.263.187.3+24.2
- CritPtK2 Horizon 375B A23B by 4.604.6+4.6
FactsK2 Horizon 375B A23B
- AA-Omniscience · Non-hallucinationK2 Horizon 375B A23B by 66.97.274.1+66.9
- AA-Omniscience · AccuracyK2 Horizon 375B A23B by 7.21118.2+7.2
Long documentsK2 Horizon 375B A23B
- AA-LCRK2 Horizon 375B A23B by 423880+42
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-OmniscienceK2 Horizon 375B A23B by 68.6-71.6-3+68.6
- Artificial Analysis Coding IndexK2 Horizon 375B A23B by 47.114.461.5+47.1
- AA IntelligenceK2 Horizon 375B A23B by 24.26.330.5+24.2
Questions people ask
Which is better, Celeris-1 or K2 Horizon 375B A23B?
K2 Horizon 375B A23B wins all five areas where both have results: coding, agents, reasoning, facts and long documents. Celeris-1 wins none.
Which is better for coding?
K2 Horizon 375B A23B. It wins 2 of the 2 coding tests both models report; Celeris-1 wins none.
How do you compare the two?
We use the 14 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 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.