Leadership History

Who held the #1 spot, for how long, and when leadership changed hands.

1063
Total Days Tracked
9
Leadership Changes
4
Orgs Who Led
338
Longest Reign (Days)

Days at #1 by Organization

OpenAI
651 days
61.2%
Google
332 days
31.2%
Anthropic
77 days
7.2%
xAI
3 days
0.3%
#1
Claude Opus 4.6CURRENT
Anthropic
2026-02-06 → present
2
days
1496
peak Elo
#2
Gemini Pro
Google
2026-01-14 → 2026-02-06
23
days
1487
peak Elo
#3
Claude 4.5 Thinking
Anthropic
2025-10-31 → 2026-01-14
75
days
1460
peak Elo
#4
Gemini 2.5 Pro
Google
2025-03-24 → 2025-10-31
221
days
1445
peak Elo
#5
GPT-4.5 Preview
OpenAI
2025-02-26 → 2025-03-24
26
days
1410
peak Elo
#6
Grok-3 Preview
xAI
2025-02-23 → 2025-02-26
3
days
1402
peak Elo
#7
GPT-4o / o1
OpenAI
2024-05-12 → 2025-02-23
287
days
1402
peak Elo
#8
Gemini 1.5 Pro
Google
2024-02-14 → 2024-05-12
88
days
1350
peak Elo
#9
GPT-4
OpenAI
2023-03-13 → 2024-02-14
338
days
1288
peak Elo