Claude Fable 5 vs Gemini 3 Pro
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents
Wins 1 of 7 areas
Following instructions
Claude Fable 5 is the stronger all-rounder.Gemini 3 Pro is cheaper and better at following instructions.
Scores updated · 33 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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.
- CodingWriting and fixing software60Claude Fable 56 of 6 tests
- ReasoningHard problems that need careful thinking50Claude Fable 55 of 5 tests
- AgentsCarrying out multi-step tasks on its own40Claude Fable 54 of 4 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 asked01Gemini 3 Pro1 of 1 test
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 Pro costs 77% 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
- Abstract visual puzzles that people can solveARC-AGI-2+58.1points ahead
- Long, multi-file coding tasks in real codebasesSWE-bench Pro+36.7points ahead
- Multi-step tasks using many real software toolsMCP Atlas+30.6points ahead
Where Gemini 3 Pro pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+6.9points ahead
- Short factual questions, answered correctlySimpleQA Verified+2.2points ahead
Every test, side by side
All 33 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 36.78043.3+36.7
- SWE-bench MultilingualClaude Fable 5 by 21.686.665+21.6
- Terminal-Bench HardClaude Fable 5 by 21.262.941.7+21.2
- SWE-bench VerifiedClaude Fable 5 by 18.89576.2+18.8
- LMArena · WebDevClaude Fable 5 by 184 rating points16241440+184 rating
- SciCodeClaude Fable 5 by 4.96156.1+4.9
AgentsClaude Fable 5
- MCP AtlasClaude Fable 5 by 30.684.754.1+30.6
- BrowseCompClaude Fable 5 by 28.287.459.2+28.2
- AA ApexAgentsClaude Fable 5 by 24.943.318.4+24.9
- GDPValClaude Fable 5 by 21.455.634.2+21.4
ReasoningClaude Fable 5
- ARC-AGI-2Claude Fable 5 by 58.189.231.1+58.1
- CritPtClaude Fable 5 by 19.528.69.1+19.5
- Humanity's Last ExamClaude Fable 5 by 15.855.539.7+15.8
- SimpleBenchClaude Fable 5 by 5.581.976.4+5.5
- GPQA DiamondClaude Fable 5 by 1.892.690.8+1.8
FactsClaude Fable 5
- AA-Omniscience · Non-hallucinationClaude Fable 5 by 27.936.48.5+27.9
- AA-Omniscience · AccuracyClaude Fable 5 by 9.665.355.8+9.6
- SimpleQA VerifiedGemini 3 Pro by 2.270.772.9+2.2
Images and chartsClaude Fable 5
- MMMU-ProClaude Fable 5 by 484.280.2+4
- LMArena · VisionClaude Fable 5 by 20 rating points13251305+20 rating
Following instructionsGemini 3 Pro
- IFBenchGemini 3 Pro by 6.963.570.4+6.9
Other results11 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.
- GDPval-AA (Elo)Claude Fable 5 by 737 rating points19321195+737 rating
- DeepSearchQA (F1)Claude Fable 5 by 3194.263.2+31
- Artificial Analysis Coding IndexClaude Fable 5 by 3076.546.5+30
- AA-OmniscienceClaude Fable 5 by 2843.315.3+28
- ToolathlonClaude Fable 5 by 25.361.736.4+25.3
- ARC-AGI-1Claude Fable 5 by 23.598.575+23.5
- AA IntelligenceClaude Fable 5 by 21.649.628+21.6
- HLE (with tools)Claude Fable 5 by 1863.845.8+18
- τ²-Bench Telecom (AA run)Claude Fable 5 by 11.498.587.1+11.4
- LiveBenchClaude Fable 5 by 4.978.373.4+4.9
- AA Agentic IndexGemini 3 Pro by 15152+1
Questions people ask
Which is better, Claude Fable 5 or Gemini 3 Pro?
Claude Fable 5 wins six of the seven areas where both have results: coding, agents, reasoning, facts, images and charts and long documents. Gemini 3 Pro wins following instructions, and costs 77% less.
Which is better for coding?
Claude Fable 5. It wins 6 of the 6 coding tests both models report; Gemini 3 Pro wins none.
Which is cheaper?
Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Gemini 3 Pro costs $2.00 and $12.00. That makes Gemini 3 Pro about 77% cheaper for the same work.
How do you compare the two?
We use the 33 benchmark tests both models have published scores on. The verdict counts the 22 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 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.