Agnes 3.0 Flash vs Claude Fable 5.1
Wins 0 of 5 areas
—
Wins 4 of 5 areas
Coding · Agents · Reasoning · Long documents
Claude Fable 5.1 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 thinking03Claude Fable 5.13 of 3 tests
- AgentsCarrying out multi-step tasks on its own02Claude Fable 5.12 of 3 tests · 1 tie
- CodingWriting and fixing software02Claude Fable 5.12 of 2 tests
- Long documentsFinding answers in very long texts01Claude Fable 5.11 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
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 Claude Fable 5.1 pulls ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+44.9points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+41.7points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+20.6points ahead
Where Agnes 3.0 Flash pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+24.2points ahead
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.
CodingClaude Fable 5.1
- SciCodeClaude Fable 5.1 by 11.551.663.1+11.5
- Terminal-Bench 2.1Claude Fable 5.1 by 9.48291.4+9.4
AgentsClaude Fable 5.1
- Terminal-Bench 4.0Claude Fable 5.1 by 44.97.152+44.9
- GDPValClaude Fable 5.1 by 10.352.562.8+10.3
- τ-Bench V3 · Bankingtie47.647.2tie
ReasoningClaude Fable 5.1
- Humanity's Last ExamClaude Fable 5.1 by 20.638.559.1+20.6
- CritPtClaude Fable 5.1 by 14.615.129.7+14.6
- GPQA DiamondClaude Fable 5.1 by 1.392.493.7+1.3
FactsEven
- AA-Omniscience · AccuracyClaude Fable 5.1 by 41.725.567.2+41.7
- AA-Omniscience · Non-hallucinationAgnes 3.0 Flash by 24.251.627.4+24.2
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 Fable 5.1 by 54.1-10.643.5+54.1
- AA IntelligenceClaude Fable 5.1 by 17.935.553.4+17.9
Questions people ask
Which is better, Agnes 3.0 Flash or Claude Fable 5.1?
Claude Fable 5.1 wins four of the five areas where both have results: coding, agents, reasoning and long documents. Agnes 3.0 Flash wins none. They are level on facts.
Which is better for coding?
Claude Fable 5.1. It wins 2 of the 2 coding tests both models report; Agnes 3.0 Flash wins none.
How do you compare the two?
We use the 13 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 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.