Claude Fable 5
VS
Gemini 3.5 Flash
Claude Fable 5 vs Gemini 3.5 Flash: 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 14 of 22 task areas we tested; Gemini 3.5 Flash takes 8. Gemini 3.5 Flash costs 5.7× less per token ($10.5 vs $60 per 1M).
Gemini 3.5 Flash costs 5.7× less per token ($10.5 vs $60 per 1M).
Task by task
| Task area | Claude Fable 5 | Gemini 3.5 Flash | Winner |
|---|---|---|---|
| Legal & HR |
#1
/ 110
Excellent
|
#73
/ 110
Strong
|
Claude Fable 5 |
| Research & Competitive Analysis |
#3
/ 110
Excellent
|
#65
/ 110
Usable
|
Claude Fable 5 |
| Frontend & Landing Pages |
#58
/ 109
Needs editing
|
#4
/ 109
Usable
|
Gemini 3.5 Flash |
| Investor & Pitch |
#3
/ 66
Strong
|
#56
/ 66
Usable
|
Claude Fable 5 |
| Content & Brand |
#1
/ 124
Excellent
|
#46
/ 124
Strong
|
Claude Fable 5 |
| Product & Project Management |
#76
/ 110
Strong
|
#33
/ 110
Strong
|
Gemini 3.5 Flash |
| Landing Pages |
#1
/ 72
Strong
|
#40
/ 72
Strong
|
Claude Fable 5 |
| Structured Output |
#68
/ 113
Strong
|
#35
/ 113
Excellent
|
Gemini 3.5 Flash |
| Data & Analytics |
#3
/ 110
Excellent
|
#34
/ 110
Excellent
|
Claude Fable 5 |
| Sales |
#5
/ 110
Strong
|
#33
/ 110
Strong
|
Claude Fable 5 |
| Creative & Comedy | #1 / 110 | #27 / 110 | Claude Fable 5 |
| AI Strategy |
#1
/ 126
Strong
|
#23
/ 126
Strong
|
Claude Fable 5 |
| Chef / Home Cooking |
#3
/ 126
Strong
|
#24
/ 126
Usable
|
Claude Fable 5 |
| Coding |
#11
/ 115
Excellent
|
#28
/ 115
Strong
|
Claude Fable 5 |
| Knowledge & Docs |
#27
/ 110
Strong
|
#44
/ 110
Strong
|
Claude Fable 5 |
| RAG, Safety & Grounding |
#30
/ 113
Excellent
|
#15
/ 113
Excellent
|
Gemini 3.5 Flash |
| Translation & Localization |
#18
/ 110
Excellent
|
#30
/ 110
Excellent
|
Claude Fable 5 |
| Customer Support |
#1
/ 113
Excellent
|
#12
/ 113
Strong
|
Claude Fable 5 |
| Training & Education |
#16
/ 110
Excellent
|
#7
/ 110
Excellent
|
Gemini 3.5 Flash |
| Summarization & Meeting Notes |
#24
/ 110
Excellent
|
#17
/ 110
Excellent
|
Gemini 3.5 Flash |
| Executive Assistant |
#22
/ 112
Strong
|
#19
/ 112
Strong
|
Gemini 3.5 Flash |
| Presentations & Decks |
#20
/ 110
Excellent
|
#17
/ 110
Excellent
|
Gemini 3.5 Flash |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Fable 5 better than Gemini 3.5 Flash?
Across 22 task areas we benchmarked, Claude Fable 5 ranks higher in 14 and Gemini 3.5 Flash in 8.
Which is cheaper, Claude Fable 5 or Gemini 3.5 Flash?
Gemini 3.5 Flash costs 5.7× less per token ($10.5 vs $60 per 1M).
What is Claude Fable 5 better at?
Claude Fable 5 out-ranks Gemini 3.5 Flash at Legal & HR, Research & Competitive Analysis, Investor & Pitch.
What is Gemini 3.5 Flash better at?
Gemini 3.5 Flash out-ranks Claude Fable 5 at Frontend & Landing Pages, Product & Project Management, Structured Output.
More comparisons
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Prompt × model results
12 test cases · 3 evals