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 138, #1 on the overall leaderboard.
Models Tracked
13
Best IQ
138
Best IQ Rank
#1
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 | 138 | #1 | $146 | 1M | Proprietary |
| Fable 5 | 2026-06-09 | 137 | #2 | $71.36 | 1M | Proprietary |
| Opus 5Latest | 2026-07-24 | 135 | #4 | $37.89 | 1M | Proprietary |
| Opus 4.8 | 2026-05-28 | 130 | #7 | $39.47 | 1M | Proprietary |
| Opus 4.7 | 2026-04-16 | 127 | #11 | $48.65 | 1M | Proprietary |
| Sonnet 5Latest | 2026-06-30 | 125 | #14 | $26.26 | 1M | Proprietary |
| Opus 4.6 | 2026-02-06 | 125 | #13 | $36.24 | n/a | Proprietary |
| Sonnet 4.6 | n/a | 118 | #34 | $26.26 | 1M | Proprietary |
| Opus 4.5 | 2025-11-24 | 113 | #47 | $25.81 | n/a | Proprietary |
| Opus 4.1 | 2025-08-05 | 98 | #94 | n/a | n/a | Proprietary |
| Haiku 4.5Latest | n/a | 98 | #91 | $3.8527 | 200K | Proprietary |
| Opus 4 | 2025-05-22 | 96 | #102 | n/a | n/a | Proprietary |
| Opus 3 | 2024-03-04 | n/a | n/a | n/a | n/a | Proprietary |