Claude Fable 5 vs Gemini 3.6 Flash
Wins 7 of 8 areas
Coding · Agents · Reasoning · Facts · Images and charts · Math · Long documents
Wins 0 of 8 areas
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Claude Fable 5 is the stronger all-rounder.Gemini 3.6 Flash is cheaper.
Scores updated · 38 tests both models report · How we compare
Where each one wins
Tests won in each of the eight areas we test. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software60Claude Fable 56 of 6 tests
- ReasoningHard problems that need careful thinking40Claude Fable 54 of 5 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own40Claude Fable 54 of 4 tests
- MathCompetition and research-level math30Claude Fable 53 of 3 tests
- Images and chartsUnderstanding pictures, charts and video20Claude Fable 52 of 2 tests
- FactsGetting facts right instead of making them up21Claude Fable 52 of 3 tests
- Long documentsFinding answers in very long texts10Claude Fable 51 of 1 test
- Following instructionsDoing exactly what it is asked00Even0 each · 1 tie
Long documents and following instructions 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.
Gemini 3.6 Flash costs 93% less for the same work.
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 pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+68.2points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+35.3points ahead
- Abstract visual puzzles that people can solveARC-AGI-2+28.8points ahead
Where Gemini 3.6 Flash pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+8points ahead
Every test, side by side
All 38 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Fable 5
- SWE-bench ProClaude Fable 5 by 21.38058.7+21.3
- LiveBench · Agentic CodingClaude Fable 5 by 18.862.243.4+18.8
- LMArena · WebDevClaude Fable 5 by 89 rating points16251536+89 rating
- LiveBench · CodingClaude Fable 5 by 8.18677.9+8.1
- SciCodeClaude Fable 5 by 7.66153.4+7.6
- Terminal-Bench 2.1Claude Fable 5 by 7.184.677.5+7.1
AgentsClaude Fable 5
- Terminal-Bench 4.0Claude Fable 5 by 35.342.47.1+35.3
- GDPValClaude Fable 5 by 16.355.639.3+16.3
- τ-Bench V3 · BankingClaude Fable 5 by 8.238.129.9+8.2
- OSWorld-VerifiedClaude Fable 5 by 28583+2
ReasoningClaude Fable 5
- ARC-AGI-2Claude Fable 5 by 28.889.260.4+28.8
- CritPtClaude Fable 5 by 1828.610.6+18
- Humanity's Last ExamClaude Fable 5 by 14.755.540.8+14.7
- LiveBench · ReasoningClaude Fable 5 by 4.589.785.2+4.5
- GPQA Diamondtie92.692.8tie
FactsClaude Fable 5
- AA-Omniscience · AccuracyClaude Fable 5 by 15.465.350+15.4
- AA-Omniscience · Non-hallucinationGemini 3.6 Flash by 836.444.4+8
- SimpleQA VerifiedClaude Fable 5 by 4.570.766.2+4.5
Images and chartsClaude Fable 5
- LMArena · VisionClaude Fable 5 by 28 rating points13251297+28 rating
- MMMU-ProClaude Fable 5 by 184.283.2+1
MathClaude Fable 5
- FrontierMath Tier 4Claude Fable 5 by 68.290.221.9+68.2
- FrontierMath Tiers 1-3 (v2)Claude Fable 5 by 288759+28
- LiveBench · MathematicsClaude Fable 5 by 9.69686.4+9.6
Following instructionsEven
- LiveBench · Instruction Followingtie75.875.4tie
Other results13 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.
- OSWorld 2.0Claude Fable 5 by 32.366.133.8+32.3
- GDPval-AA v2Claude Fable 5 by 302 rating points17231421+302 rating
- GDPval-AA v2 EloClaude Fable 5 by 301 rating points17231422+301 rating
- AA-OmniscienceClaude Fable 5 by 21.243.322.1+21.2
- DeepSWEClaude Fable 5 by 217049+21
- DeepSWE 1.1Claude Fable 5 by 217049+21
- AA Agentic IndexClaude Fable 5 by 20.85130.2+20.8
- livebench_data_analysisClaude Fable 5 by 17.580.563+17.5
- AA IntelligenceClaude Fable 5 by 15.649.634+15.6
- GDP (Surge AI)Claude Fable 5 by 7.829.822+7.8
- ARC-AGI-1Claude Fable 5 by 7.398.591.2+7.3
- Artificial Analysis Coding IndexClaude Fable 5 by 7.376.569.2+7.3
- livebench_languageClaude Fable 5 by 6.890.783.9+6.8
Questions people ask
Which is better, Claude Fable 5 or Gemini 3.6 Flash?
Claude Fable 5 wins seven of the eight areas we test: coding, agents, reasoning, facts, images and charts, math and long documents. Gemini 3.6 Flash wins none, but costs 93% less. They are level on following instructions.
Which is better for coding?
Claude Fable 5. It wins 6 of the 6 coding tests both models report; Gemini 3.6 Flash wins none.
Which is cheaper?
Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Gemini 3.6 Flash costs $0.75 and $3.75. That makes Gemini 3.6 Flash about 93% cheaper for the same work.
How do you compare the two?
We use the 38 benchmark tests both models have published scores on. The verdict counts the 25 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 13 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.