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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 7.4. Gemini 3 Flash Preview has the lower benchmark cost at $0.025 vs $3.165. Gemini 3 Flash Preview is faster at 1.65s vs 17.01s, with pass rates of 82.5% vs 66.7%.

Recommended model: Gemini 3 Flash Preview - It offers the best overall trade-off: a competitive score (7.4), 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 Flash Preview Gemini 3 Flash Preview none Release: 2025-12-17
Score 8.7 7.4
Rank #12 #49
Reliability 10.0 10.0
Consistency 9.6 9.2
Tests Correct
Attempt pass rate 82.5% 66.7%
Flaky tests 1 2
Total Runs 63 63
Cost per result 18.614 0.186
Total Cost $3.165 $0.025
Input Price $10.000 / 1M $0.500 / 1M
Output Price $50.000 / 1M $3.000 / 1M
Total Input Tokens 58,383 37,011
Output Tokens 41,340 1,885
Reasoning Tokens 10,269 0
Response Time (avg) 17.01s 1.65s
Response Time (max) 80.80s 3.56s
Response Time (total) 357.17s 23.07s

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

#49 Gemini 3 Flash Preview

none
Cost
$0.003
Time
5.6s
Tokens
981 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 8.3 10.0 75.0% 0 1.25s 498 214 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 Flash Preview 5.5 10.0 33.3% 0 1.80s 8,122 453 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 Flash Preview 4.7 1.6 66.7% 1 3.56s 12,862 350 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 1.41s 7,263 279 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 Flash Preview 7.7 10.0 66.7% 0 963ms 643 18 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 Flash Preview 10.0 10.0 100.0% 0 1.13s 490 104 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 Flash Preview 6.4 5.8 66.7% 1 1.58s 619 74 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 Flash Preview 7.7 10.0 66.7% 0 1.05s 574 144 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 Flash Preview 10.0 10.0 100.0% 0 3.35s 5,784 234 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 Flash Preview 3.0 10.0 0.0% 0 1.07s 156 15 0

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