AI Lab
Anthropic AI Models
AI IQ tracks 13 Anthropic models, from the lab's home base in United States. Fable 5.1 is the lab's highest-scoring model with an estimated IQ of 137, #3 on the overall leaderboard.
Models Tracked
13
Best IQ
137
Best IQ Rank
#2
Open Weights
0/13
Latest Generation
The newest release in each Anthropic model line
Every Tracked Anthropic Model
Latest = current-generation release
| Model | Released | IQ | IQ Rank | Effective Cost | Context | Weights |
|---|---|---|---|---|---|---|
| Fable 5.1Latest | 2026-09-01 | 137 | #3 | $144 | 1M | Proprietary |
| Fable 5 | 2026-06-09 | 137 | #2 | $70.52 | 1M | Proprietary |
| Opus 5Latest | 2026-07-24 | 135 | #5 | $37.56 | 1M | Proprietary |
| Opus 4.8 | 2026-05-28 | 130 | #8 | $39.12 | 1M | Proprietary |
| Opus 4.7 | 2026-04-16 | 127 | #12 | $48.34 | 1M | Proprietary |
| Opus 4.6 | 2026-02-06 | 126 | #13 | $36.05 | n/a | Proprietary |
| Sonnet 5Latest | 2026-06-30 | 125 | #15 | $26.12 | 1M | Proprietary |
| Sonnet 4.6 | n/a | 118 | #35 | $26.12 | 1M | Proprietary |
| Opus 4.5 | 2025-11-24 | 113 | #48 | $25.68 | n/a | Proprietary |
| Haiku 4.5Latest | n/a | 98 | #92 | $3.8467 | 200K | Proprietary |
| Opus 4.1 | 2025-08-05 | 94 | #104 | n/a | n/a | Proprietary |
| Opus 4 | 2025-05-22 | 93 | #106 | n/a | n/a | Proprietary |
| Opus 3 | 2024-03-04 | 79 | #129 | n/a | n/a | Proprietary |