Claude Fable 5
VS
Claude Opus 4.6
Claude Fable 5 vs Claude Opus 4.6: which wins at real work?
22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.
Claude Fable 5 wins 16 of 22 task areas we tested; Claude Opus 4.6 takes 6. Claude Opus 4.6 costs 2.0× less per token ($30 vs $60 per 1M).
Claude Opus 4.6 costs 2.0× less per token ($30 vs $60 per 1M).
Task by task
| Task area | Claude Fable 5 | Claude Opus 4.6 | Winner |
|---|---|---|---|
| Customer Support |
#1
/ 113
Excellent
|
#81
/ 113
Usable
|
Claude Fable 5 |
| Knowledge & Docs |
#27
/ 110
Strong
|
#66
/ 110
Usable
|
Claude Fable 5 |
| Presentations & Decks |
#20
/ 110
Excellent
|
#54
/ 110
Excellent
|
Claude Fable 5 |
| Product & Project Management |
#76
/ 110
Strong
|
#45
/ 110
Strong
|
Claude Opus 4.6 |
| Structured Output |
#68
/ 113
Strong
|
#98
/ 113
Strong
|
Claude Fable 5 |
| RAG, Safety & Grounding |
#30
/ 113
Excellent
|
#59
/ 113
Excellent
|
Claude Fable 5 |
| Research & Competitive Analysis |
#3
/ 110
Excellent
|
#29
/ 110
Strong
|
Claude Fable 5 |
| Landing Pages |
#1
/ 72
Strong
|
#23
/ 72
Strong
|
Claude Fable 5 |
| Translation & Localization |
#18
/ 110
Excellent
|
#2
/ 110
Excellent
|
Claude Opus 4.6 |
| Training & Education |
#16
/ 110
Excellent
|
#1
/ 110
Excellent
|
Claude Opus 4.6 |
| Content & Brand |
#1
/ 124
Excellent
|
#14
/ 124
Strong
|
Claude Fable 5 |
| Summarization & Meeting Notes |
#24
/ 110
Excellent
|
#34
/ 110
Excellent
|
Claude Fable 5 |
| Chef / Home Cooking |
#3
/ 126
Strong
|
#12
/ 126
Strong
|
Claude Fable 5 |
| Creative & Comedy | #1 / 110 | #10 / 110 | Claude Fable 5 |
| Coding |
#11
/ 115
Excellent
|
#18
/ 115
Excellent
|
Claude Fable 5 |
| Data & Analytics |
#3
/ 110
Excellent
|
#10
/ 110
Excellent
|
Claude Fable 5 |
| Frontend & Landing Pages |
#58
/ 109
Needs editing
|
#51
/ 109
Needs editing
|
Claude Opus 4.6 |
| Legal & HR |
#1
/ 110
Excellent
|
#8
/ 110
Excellent
|
Claude Fable 5 |
| Investor & Pitch |
#3
/ 66
Strong
|
#8
/ 66
Strong
|
Claude Fable 5 |
| AI Strategy |
#1
/ 126
Strong
|
#5
/ 126
Strong
|
Claude Fable 5 |
| Executive Assistant |
#22
/ 112
Strong
|
#18
/ 112
Strong
|
Claude Opus 4.6 |
| Sales |
#5
/ 110
Strong
|
#4
/ 110
Strong
|
Claude Opus 4.6 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Same task, both models — judged
Both models answered the same test case; an independent judge graded each. Quotes are the judge's actual rationale.
Knowledge & Docs
Runbook: rotate a production credential (Northwind) (Procedure / Runbook)
“The model successfully creates a runbook that meets all constraints. It includes prerequisites, uses numbered steps with one primary action per step, places a clear warning before the irreversible revocation step, and includes thorough verification steps. No UI elements or unsupported features were fabricated, and the tone is appropriate for a technical runbook.”
“The response contains severe fabrications of menu paths and API endpoints, and crams multiple actions into single steps.”
Research & Competitive Analysis
Teardown without bashing (Tradewinds) (Competitive Teardown)
“The model answer is an exceptional example of epistemic hygiene. It explicitly defines and separates facts, inferences, and unknowns, perfectly avoiding the fabrication of competitor data while acknowledging their genuine structural advantages. The analysis is highly symmetric, rigorous, and actionable. The only minor flaw is opting for a placeholder rather than using the specific 88% fill rate provided in the prompt's guidelines.”
“The model severely hallucinated external knowledge and failed to ground its analysis in the provided facts.”
Frequently asked
Is Claude Fable 5 better than Claude Opus 4.6?
Across 22 task areas we benchmarked, Claude Fable 5 ranks higher in 16 and Claude Opus 4.6 in 6.
Which is cheaper, Claude Fable 5 or Claude Opus 4.6?
Claude Opus 4.6 costs 2.0× less per token ($30 vs $60 per 1M).
What is Claude Fable 5 better at?
Claude Fable 5 out-ranks Claude Opus 4.6 at Customer Support, Knowledge & Docs, Presentations & Decks.
What is Claude Opus 4.6 better at?
Claude Opus 4.6 out-ranks Claude Fable 5 at Product & Project Management, Translation & Localization, Training & Education.
More comparisons
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Prompt × model results
12 test cases · 3 evals