Claude Fable 5 vs Mi:dm K 2.5 Pro
Wins 6 of 6 areas
Coding · Agents · Reasoning · Facts · Long documents · Following instructions
Wins 0 of 6 areas
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Claude Fable 5 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 six 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 thinking30Claude Fable 53 of 3 tests
- FactsGetting facts right instead of making them up20Claude Fable 52 of 2 tests
- CodingWriting and fixing software10Claude Fable 51 of 1 test
- AgentsCarrying out multi-step tasks on its own10Claude Fable 51 of 1 test
- Long documentsFinding answers in very long texts10Claude Fable 51 of 1 test
- Following instructionsDoing exactly what it is asked10Claude Fable 51 of 1 test
Coding, agents, 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.
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
- Reasons across sets of long documentsAA-LCR+73.3points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+60.6points ahead
- Real work tasks from 44 professionsGDPVal+48.5points ahead
Where Mi:dm K 2.5 Pro pulls ahead
No clear win on a test scored out of 100.
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.
ReasoningClaude Fable 5
- Humanity's Last ExamClaude Fable 5 by 47.455.58.1+47.4
- CritPtClaude Fable 5 by 28.628.60+28.6
- GPQA DiamondClaude Fable 5 by 22.592.670.1+22.5
FactsClaude Fable 5
- AA-Omniscience · AccuracyClaude Fable 5 by 47.565.317.9+47.5
- AA-Omniscience · Non-hallucinationClaude Fable 5 by 30.336.46.1+30.3
Following instructionsClaude Fable 5
- IFBenchClaude Fable 5 by 14.263.549.3+14.2
Other results4 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 by 102.543.3-59.2+102.5
- AA IntelligenceClaude Fable 5 by 38.649.611+38.6
- AA Agentic IndexClaude Fable 5 by 14.25136.8+14.2
- τ²-Bench Telecom (AA run)Claude Fable 5 by 1298.586.5+12
Questions people ask
Which is better, Claude Fable 5 or Mi:dm K 2.5 Pro?
Claude Fable 5 wins all six areas where both have results: coding, agents, reasoning, facts, long documents and following instructions. Mi:dm K 2.5 Pro wins none.
Which is better for coding?
Claude Fable 5. It wins the one coding test both models report.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 9 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 4 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.