Agnes 3.0 Flash vs Claude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback)
Wins 3 of 5 areas
Coding · Reasoning · Long documents
Wins 0 of 5 areas
—
Agnes 3.0 Flash is the stronger all-rounder.
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.
- ReasoningHard problems that need careful thinking20Agnes 3.0 Flash2 of 2 tests
- CodingWriting and fixing software10Agnes 3.0 Flash1 of 1 test
- Long documentsFinding answers in very long texts10Agnes 3.0 Flash1 of 1 test
- AgentsCarrying out multi-step tasks on its own11Even1 each
- FactsGetting facts right instead of making them up11Even1 each
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 tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Agnes 3.0 Flash pulls ahead
Where Claude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+20.8points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+13.6points 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.
AgentsEven
- GDPValAgnes 3.0 Flash by 18.652.533.9+18.6
- Terminal-Bench 4.0Claude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) by 13.67.120.7+13.6
ReasoningAgnes 3.0 Flash
- CritPtAgnes 3.0 Flash by 3.715.111.4+3.7
- Humanity's Last ExamAgnes 3.0 Flash by 2.338.536.2+2.3
FactsEven
- AA-Omniscience · AccuracyClaude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) by 20.825.546.3+20.8
- AA-Omniscience · Non-hallucinationAgnes 3.0 Flash by 1.851.649.8+1.8
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-OmniscienceClaude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) by 30-10.619.4+30
- AA Intelligencetie35.535.9tie
Questions people ask
Which is better, Agnes 3.0 Flash or Claude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback)?
Agnes 3.0 Flash wins three of the five areas where both have results: coding, reasoning and long documents. Claude Sonnet 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) wins none. They are level on agents and facts.
Which is better for coding?
Agnes 3.0 Flash. 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.