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Anthropic: Claude Fable 5 vs Google: Gemini 3 Flash Preview

Summary

Claude Fable 5 vs Gemini 3 Flash Preview benchmark comparison: Claude Fable 5 leads on average score with 8.7 vs 8.4. Gemini 3 Flash Preview has the lower benchmark cost at $0.111 vs $3.165. Gemini 3 Flash Preview is faster at 5.76s vs 17.01s, with pass rates of 82.5% vs 79.4%.

Recommended model: Gemini 3 Flash Preview - Its score stays close to the best score here (8.4 vs 8.7), while costing about 28.7x 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 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17
Score 8.7 8.4
Rank #12 #17
Reliability 10.0 10.0
Consistency 9.6 9.2
Tests Correct
Attempt pass rate 82.5% 79.4%
Flaky tests 1 2
Total Runs 63 63
Cost per result 18.614 0.689
Total Cost $3.165 $0.111
Input Price $10.000 / 1M $0.500 / 1M
Output Price $50.000 / 1M $3.000 / 1M
Total Input Tokens 58,383 36,769
Output Tokens 41,340 2,076
Reasoning Tokens 10,269 28,518
Response Time (avg) 17.01s 5.76s
Response Time (max) 80.80s 14.72s
Response Time (total) 357.17s 120.93s

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

#17 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 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 Flash Preview 10.0 10.0 100.0% 0 3.48s 500 281 3,082
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 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
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 Flash Preview 3.0 10.0 0.0% 0 3.27s 12,860 326 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 Flash Preview 10.0 10.0 100.0% 0 9.40s 7,261 279 3,656
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 Flash Preview 5.3 7.2 44.4% 1 8.05s 645 12 6,410
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 Flash Preview 10.0 10.0 100.0% 0 3.68s 492 120 981
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 Flash Preview 9.9 10.0 100.0% 0 7.02s 621 71 2,752
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 Flash Preview 10.0 10.0 100.0% 0 5.77s 562 288 3,168
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 Flash Preview 10.0 10.0 100.0% 0 4.99s 5,550 234 415
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 Flash Preview 10.0 10.0 100.0% 0 2.75s 156 9 633

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