Claude Fable 5 vs Muse Glimmer
Wins 5 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts
Wins 2 of 7 areas
Long documents · Following instructions
Claude Fable 5 is the stronger all-rounder.Muse Glimmer is cheaper and better at long documents.
Scores updated · 24 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 software50Claude Fable 55 of 5 tests
- AgentsCarrying out multi-step tasks on its own50Claude Fable 55 of 5 tests
- ReasoningHard problems that need careful thinking30Claude Fable 53 of 3 tests
- FactsGetting facts right instead of making them up20Claude Fable 52 of 2 tests
- Images and chartsUnderstanding pictures, charts and video10Claude Fable 51 of 1 test
- Long documentsFinding answers in very long texts01Muse Glimmer1 of 1 test
- Following instructionsDoing exactly what it is asked01Muse Glimmer1 of 1 test
Images and charts, 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.
Muse Glimmer costs 97% 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
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+41.9points ahead
- Real work tasks from 44 professionsGDPVal+41.1points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+38.4points ahead
Every test, side by side
All 24 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Fable 5
- Terminal-Bench 2.1Claude Fable 5 by 32.984.651.7+32.9
- SWE-bench ProClaude Fable 5 by 28.88051.2+28.8
- LMArena · WebDevClaude Fable 5 by 265 rating points16251360+265 rating
- SWE-bench VerifiedClaude Fable 5 by 199576+19
- SciCodeClaude Fable 5 by 16.16144.9+16.1
AgentsClaude Fable 5
- Terminal-Bench 4.0Claude Fable 5 by 41.942.40.5+41.9
- GDPValClaude Fable 5 by 41.155.614.5+41.1
- OSWorld-VerifiedClaude Fable 5 by 19.18565.9+19.1
- τ-Bench V3 · BankingClaude Fable 5 by 14.638.123.5+14.6
- MCP AtlasClaude Fable 5 by 9.284.775.5+9.2
ReasoningClaude Fable 5
- Humanity's Last ExamClaude Fable 5 by 33.555.522+33.5
- CritPtClaude Fable 5 by 2628.62.6+26
- GPQA DiamondClaude Fable 5 by 9.192.683.5+9.1
FactsClaude Fable 5
- AA-Omniscience · AccuracyClaude Fable 5 by 38.465.327+38.4
- AA-Omniscience · Non-hallucinationClaude Fable 5 by 18.336.418.1+18.3
Images and chartsClaude Fable 5
- MMMU-ProClaude Fable 5 by 9.984.274.3+9.9
Following instructionsMuse Glimmer
- IFBenchMuse Glimmer by 13.563.577+13.5
Other results6 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 76.143.3-32.9+76.1
- AA Agentic IndexClaude Fable 5 by 40.55110.5+40.5
- AA IntelligenceClaude Fable 5 by 32.149.617.5+32.1
- Artificial Analysis Coding IndexClaude Fable 5 by 27.576.549+27.5
- DeepSearchQA (F1)Claude Fable 5 by 19.694.274.6+19.6
- τ³-Bench BankingClaude Fable 5 by 3.326.823.5+3.3
Questions people ask
Which is better, Claude Fable 5 or Muse Glimmer?
Claude Fable 5 wins five of the seven areas where both have results: coding, agents, reasoning, facts and images and charts. Muse Glimmer wins long documents and following instructions, and costs 97% less.
Which is better for coding?
Claude Fable 5. It wins 5 of the 5 coding tests both models report; Muse Glimmer wins none.
Which is cheaper?
Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Muse Glimmer costs $0.33 and $1.35. That makes Muse Glimmer about 97% cheaper for the same work.
How do you compare the two?
We use the 24 benchmark tests both models have published scores on. The verdict counts the 18 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 6 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.