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Claude Fable 5.1 (high) vs Gemini 3.5 Flash (medium)

Claude Fable 5.1 (high) leads on average score with 7.9 vs 7.9. Gemini 3.5 Flash (medium) has the lower benchmark cost at $1.316 vs $3.471. Gemini 3.5 Flash (medium) is faster at 11.78s vs 13.30s, with pass rates of 85.5% vs 81.2%.

Last updated at: 2026-10-16

Compared models

Rank
#116
Total Output Tokens
40,466
Response Time (avg)
13.30s
Total Cost
$3.471
Rank
#119
Total Output Tokens
96,655
Response Time (avg)
11.78s
Total Cost
$1.316
Recommended model Gemini 3.5 Flash (medium)

Its score stays close to the best score here (7.9 vs 7.9), while costing about 2.6x less than Claude Fable 5.1 (high).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 high Release: 2026-09-02 Gemini 3.5 Flash Gemini 3.5 Flash medium Release: 2026-05-19
Score 7.9 7.9
Rank #116 #119
Reliability 10.0 10.0
Consistency 9.7 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 85.5% 81.2%
Flaky tests 1 2
Total Runs 69 69
Cost per result 18.264 7.306
Total Cost $3.471 $1.316
Input Price $10.000 / 1M $1.500 / 1M
Output Price $50.000 / 1M $9.000 / 1M
Cache Read Price $0.250 / 1M $0.150 / 1M
Cache Write Price $12.500 / 1M $0.084 / 1M
Total Input Tokens 144,676 296,760
Output Tokens 8,184 4,371
Reasoning Tokens 32,282 92,284
Response Time (avg) 13.30s 11.78s
Response Time (max) 40.17s 84.47s
Response Time (total) 305.83s 271.03s
Parameters ~9.5T total (~878B active) ~500B total (~20B active)
Availability Closed Closed

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#116 Claude Fable 5.1

high
Cost
$0.384
Time
102.5s
Tokens
7,824 tok

#119 Gemini 3.5 Flash

medium
Cost
$0.201
Time
112.9s
Tokens
22,371 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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Fable 5.1 8.4 7.4 88.9% 1 13.91s 10,608 520 6,503
Gemini 3.5 Flash 7.9 7.5 77.8% 1 12.63s 8,118 461 24,939

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