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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: Gemini 3.5 Flash leads on average score with 9.4 vs 8.7. Gemini 3.5 Flash has the lower benchmark cost at $0.349 vs $3.165. Gemini 3.5 Flash is faster at 3.27s vs 17.01s, with pass rates of 82.5% vs 90.5%.

Recommended model: Gemini 3.5 Flash - It has the best score here (9.4), while costing about 9.1x less than Claude Fable 5.

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 low Release: 2026-05-19
Score 8.7 9.4
Rank #12 #3
Reliability 10.0 10.0
Consistency 9.6 10.0
Tests Correct
Attempt pass rate 82.5% 90.5%
Flaky tests 1 0
Total Runs 63 63
Cost per result 18.614 1.834
Total Cost $3.165 $0.349
Input Price $10.000 / 1M $1.500 / 1M
Output Price $50.000 / 1M $9.000 / 1M
Total Input Tokens 58,383 36,938
Output Tokens 41,340 2,033
Reasoning Tokens 10,269 30,519
Response Time (avg) 17.01s 3.27s
Response Time (max) 80.80s 9.05s
Response Time (total) 357.17s 68.65s

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

#3 Gemini 3.5 Flash

low
Cost
$0.068
Time
39.1s
Tokens
7,588 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 10.0 10.0 100.0% 0 2.52s 494 209 2,536
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 7.8 10.0 66.7% 0 6.71s 8,118 458 13,420
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 10.0 10.0 100.0% 0 6.44s 12,873 351 3,050
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 1.81s 7,548 279 1,164
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 7.7 10.0 66.7% 0 3.39s 633 12 4,538
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 2.27s 486 119 916
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 9.9 10.0 100.0% 0 1.86s 615 71 1,652
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 2.35s 558 288 2,150
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 3.27s 5,457 234 403
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 10.0 10.0 100.0% 0 1.88s 156 12 690

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