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Weekly AI Performance Report

Week of August 8, 2026

81 models improved, 216 declined, and 3 unchanged this week across 300 tracked models.

1

Executive Summary

Biggest Gainer

Claude Fable 5 (batch)

+377 ranks

Currently ranked #2

Biggest Loser

Seed 1.6 Flash

-65 ranks

Currently ranked #297

New Entries

10

new models entered rankings this week

2

Weekly Movers

Top 10 models with the largest absolute rank changes over the past 7 days.

ModelScore7d ChangeRank
Claude Fable 5 (batch)Anthropic97.1+377#2
Claude Opus 4.7 (batch)Anthropic95.1+370#9
Claude Opus 4.8 (batch)Anthropic94.6+369#10
GPT-5.5 Pro (batch)OpenAI92.7+367#12
GPT-5.5 (batch)OpenAI92.7+365#14
Gemini 3.1 Pro Preview (batch)Google92.2+362#17
GPT-5.4 Pro (batch)OpenAI91.9+360#19
GPT-5.4 (batch)OpenAI91.9+358#21
GPT-5.2 Pro (batch)OpenAI90.5+352#27
GPT-5.2 (batch)OpenAI90.5+350#29
3

Top Gainers

Models with the largest positive rank improvements this week.

4

Top Losers

Models with the largest negative rank drops this week.

2-70
3-69
4-69
5-69
7
Mistral NemoMistral AI
-69
9-67
10-67
5

New Models

10 new models entered the rankings this week.

6

Watch List

Models in a fragile state that might degrade further. Monitor closely.

ModelScore7d Change
95.1+171
95.1+171
92.7-7
92.2-8
92.2-8
91.9-9
91.9-10
90.5+10
90.5-12
90.5+40
90.5-13
90.5-14
90.4-15
89.0-16
89.0-17
89.0-18
89.0-19
89.0-20
89.0-21
88.7-19
88.7-19
88.7-19
88.7-26
88.7-28
88.4-29
87.8-28
86.7-27
86.7-27
86.7-28
85.2+123
85.2-30
85.1-31
83.5-32
83.5-33
83.5-33
82.4-33
82.1-35
81.4-36
81.3-37
80.5-36
80.5-36
80.2-40
80.0-38
79.4-39
79.4-39
79.3-39
79.3-40
79.3-41
79.1-41
79.1-42
79.0-43
78.5-44
78.0-32
78.0-8
78.0-48
78.0-48
77.7-46
77.4-46
77.0-45
76.9-45
76.2-47
76.0-47
75.9-50
75.8-48
75.3-47
75.1-33
75.1-21
75.1-49
74.8+71
74.8+83
74.8-51
74.4-50
74.4-50
74.3-51
74.2-52
74.1-55
74.0-54
74.0-61
73.6-55
73.0-56
73.0-56
73.0-56
72.3-56
72.1-56
72.0-44
72.0-57
71.8-48
71.8-45
71.8-60
71.7-60
71.6-60
71.2-61
71.2-61
71.2-61
70.8-60
70.7-60
69.5-56
69.5-56
69.4-47
69.4-57
69.3-57
69.3-57
69.1-56
68.6-56
68.2-59
68.2+55
68.2-58
67.9-58
67.7-58
67.4-58
67.0-58
66.9-41
66.9-59
66.8-59
66.7-59
66.5-59
66.1-59
65.9-33
65.9-60
65.7-60
65.7-60
65.5-60
65.5-60
65.3-60
64.8-45
64.8-61
64.7-61
64.1-59
64.1+65
64.1-63
64.1-63
63.9-62
63.9-61
63.7-61
63.4-61
62.5-61
61.0-63
61.0-63
60.5-63
60.2-63
59.1-62
57.4-64
57.4-64
56.5-64
55.3-63
54.9-63
54.7-63
54.1-63
54.0-64
53.6-64
53.3-64
52.4-63
51.4-63
51.3-63
50.8-63
48.7-62
48.7-63
46.9-63
44.5-63
42.1-63
40.7-63
40.4-63
40.0-64
40.0-64
40.0-64
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-64
40.0-64
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-62
40.0-62
40.0-62
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-63
40.0-62
40.0-62
40.0-62
40.0-62
40.0-62
40.0-65
40.0-65
40.0-65
40.0-65
7

Leaderboard Snapshot

Top 10 AI models this week by composite score.

#ModelScore7d Change
1Claude Fable 5Anthropic97.10
2Claude Fable 5 (batch)Anthropic97.1+377
3Claude Opus 5 (Fast)Anthropic95.1+171
4Claude Opus 5Anthropic95.1+171
5Claude Opus 4.8 (Fast)Anthropic95.1-1
6Claude Opus 4.8Anthropic95.1-1
7Claude Opus 4.7 (Fast)Anthropic95.1-5
8Claude Opus 4.7Anthropic95.1-5
9Claude Opus 4.7 (batch)Anthropic95.1+370
10Claude Opus 4.8 (batch)Anthropic94.6+369
8

This Week's Numbers

Total Ranked

300

Avg Score

67.8

Top 10 Moved

9/10

Most Active Provider

OpenAI

9

Read More Analysis

Frequently Asked Questions

The weekly report summarizes seven days of AI model ranking changes. It highlights the biggest gainers and losers by rank position, new models entering the leaderboard, models in a fragile watch-list state, and a snapshot of the current top 10. All data comes from hourly-updated composite scores across 290+ models.

Gainers and losers are ranked by their 7-day rank change, which measures how many positions a model moved up or down on the leaderboard over the past week. The models with the largest positive changes are the top gainers, and those with the largest negative changes are the top losers.

The watch list contains models currently in a "fragile" state, meaning their rankings are unstable and could degrade further. Monitoring these models is important if you rely on them in production, as they may experience significant quality or performance drops in the near term.

Weekly AI Performance Report - This Week in AI Models | LM Market Cap