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Anthropic AI Models

AI IQ tracks 17 Anthropic models, from the lab's home base in United States. Opus 5.5 is the lab's highest-scoring model with an estimated IQ of 141, #2 on the overall leaderboard.

Models Tracked
17
Best IQ
141
Best IQ Rank
#2
Open Weights
0/17

Latest Generation

The newest release in each Anthropic model line

Every Tracked Anthropic Model

Latest = current-generation release

ModelReleasedIQIQ RankEffective CostContextWeights
Opus 5.5Latest 2026-09-22 141 #2 $35.73 1M Proprietary · API pricing
Sonnet 5.5Latest 2026-09-28 137 #7 $57.37 1M Proprietary · API pricing
Fable 5.1Latest 2026-09-01 137 #5 $90.99 1M Proprietary · API pricing
Opus 5 2026-07-24 136 #8 $45.02 1M Proprietary · API pricing
Fable 5 2026-06-09 133 #10 $87.22 1M Proprietary · API pricing
Opus 4.8 2026-05-28 129 #16 $43.21 1M Proprietary · API pricing
Sonnet 5 2026-06-30 125 #27 $38.58 1M Proprietary · API pricing
Opus 4.7 2026-04-16 124 #30 $62.16 1M Proprietary · API pricing
Haiku 5.5Latest 2026-10-07 120 #44 $1.3600 1M Proprietary · API pricing
Opus 4.6 2026-02-06 117 #51 $49.93 n/a Proprietary · API pricing
Sonnet 4.6 2026-02-17 115 #56 $30.63 1M Proprietary · API pricing
Opus 4.5 2025-11-24 112 #67 $31.19 n/a Proprietary · API pricing
Haiku 4.5 2025-10-15 100 #120 $3.0064 200K Proprietary · API pricing
Opus 4.1 2025-08-05 100 #124 $51.49 n/a Proprietary · API pricing
Opus 4 2025-05-22 95 #143 $51.49 n/a Proprietary · API pricing
Opus 3 2024-03-04 80 #168 $51.49 n/a Proprietary · API pricing
Mythos 5.1Latest 2026-09-01 n/a n/a n/a n/a Proprietary

Compare Opus 5.5

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