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Claude Fable 5.1 (medium) vs Inkling Small (high)

Inkling Small (high) leads on average score with 7.4 vs 7.3. Inkling Small (high) has the lower benchmark cost at $0.398 vs $3.197. Claude Fable 5.1 (medium) is faster at 11.87s vs 29.10s, with pass rates of 78.3% vs 66.7%.

Last updated at: 2026-10-16

Compared models

Rank
#159
Total Output Tokens
32,506
Response Time (avg)
11.87s
Total Cost
$3.197
Rank
#154
Total Output Tokens
298,893
Response Time (avg)
29.10s
Total Cost
$0.398
Recommended model Inkling Small (high)

It has the best score here (7.4), while costing about 8.0x less than Claude Fable 5.1 (medium).

Detailed comparison

Metric Claude Fable 5.1 Claude Fable 5.1 medium Release: 2026-09-02 Inkling Small Inkling Small high Release: 2026-08-01 Free Available
Score 7.3 7.4
Rank #159 #154
Reliability 10.0 10.0
Consistency 7.9 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 78.3% 66.7%
Flaky tests 6 2
Total Runs 69 69
Cost per result 21.312 2.868
Total Cost $3.197 $0.398
Input Price $10.000 / 1M $0.450 / 1M
Output Price $50.000 / 1M $1.200 / 1M
Cache Read Price $0.250 / 1M $0.100 / 1M
Cache Write Price $12.500 / 1M N/A
Total Input Tokens 157,142 85,669
Output Tokens 8,149 6,092
Reasoning Tokens 24,357 292,801
Response Time (avg) 11.87s 29.10s
Response Time (max) 36.59s 122.60s
Response Time (total) 272.91s 669.40s
Parameters ~9.5T total (~878B active) 276B total (12B 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.

#159 Claude Fable 5.1

medium
Cost
$0.244
Time
65.9s
Tokens
5,025 tok

#154 Thinking Machines: Inkling Small

high
Cost
$0.006
Time
34.7s
Tokens
4,735 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 7.0 5.0 77.8% 2 10.99s 10,608 525 4,376
Inkling Small 10.0 10.0 100.0% 0 93.23s 7,374 463 120,474

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