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Anthropic: Claude Fable 5 vs Google: Gemini 3.5 Flash

Summary

Claude Fable 5 vs Gemini 3.5 Flash benchmark comparison: Claude Fable 5 leads on average score with 8.7 vs 7.7. Gemini 3.5 Flash has the lower benchmark cost at $0.108 vs $3.165. Gemini 3.5 Flash is faster at 1.57s vs 17.01s, with pass rates of 82.5% vs 68.3%.

Recommended model: Gemini 3.5 Flash - It offers the best overall trade-off: a competitive score (7.7), lower cost than Claude Fable 5, and balanced response time.

Last updated at: 2026-06-10

Metric Claude Fable 5 Claude Fable 5 medium Release: 2026-06-10 Gemini 3.5 Flash Gemini 3.5 Flash minimal Release: 2026-05-19
Score 8.7 7.7
Rank #12 #33
Reliability 10.0 10.0
Consistency 9.6 9.6
Tests Correct
Attempt pass rate 82.5% 68.3%
Flaky tests 1 1
Total Runs 63 63
Cost per result 18.614 0.767
Total Cost $3.165 $0.108
Input Price $10.000 / 1M $1.500 / 1M
Output Price $50.000 / 1M $9.000 / 1M
Total Input Tokens 58,383 39,847
Output Tokens 41,340 5,277
Reasoning Tokens 10,269 0
Response Time (avg) 17.01s 1.57s
Response Time (max) 80.80s 5.51s
Response Time (total) 357.17s 33.02s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#12 Claude Fable 5

medium
Cost
$0.606
Time
156.7s
Tokens
12,264 tok

#33 Gemini 3.5 Flash

minimal
Cost
$0.041
Time
20.4s
Tokens
4,608 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 6.20s 834 530 402
Gemini 3.5 Flash 6.5 10.0 50.0% 0 892ms 492 405 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 15.59s 10,590 7,383 1,318
Gemini 3.5 Flash 5.6 9.9 33.3% 0 2.75s 8,122 3,456 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 33.70s 20,937 2,353 1,599
Gemini 3.5 Flash 3.0 10.0 0.0% 0 3.56s 15,780 404 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 7.18s 10,503 521 363
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.66s 7,548 279 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 5.3 7.2 44.4% 1 53.40s 975 25,215 5,001
Gemini 3.5 Flash 10.0 10.0 100.0% 0 899ms 633 12 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 7.42s 708 366 144
Gemini 3.5 Flash 10.0 10.0 100.0% 0 922ms 486 117 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 5.90s 909 139 202
Gemini 3.5 Flash 6.4 5.8 66.7% 1 893ms 615 76 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 7.7 10.0 66.7% 0 5.18s 894 402 324
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.45s 558 282 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 10.0 10.0 100.0% 0 16.96s 11,775 729 344
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.79s 5,457 234 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5 3.0 10.0 0.0% 0 25.64s 258 3,702 572
Gemini 3.5 Flash 3.0 10.0 0.0% 0 1.76s 156 12 0

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