AnthropicReleased May 22, 2025
Proprietary
opus-4
Its best results are in Programmatic Reasoning (#99 of 177) and Academic Reasoning (#128 of 203); weakest in Abstract Reasoning (#175 of 201). Computer Use and Knowledge Work are estimated, because no results are published yet.
Composite IQ ?
95
Effective cost
$51.65/1M
$15 in · $75 out
Speed
Not measured
No speed data yet
Context
Unverified
Not in publisher docs
Evidence
5of 7 dims
13 of 39 benchmarks
IQ profile
Seven dimensions, averaged equally into Composite IQ
MeasuredEstimated95% range
#1 in dimensionTop-10 median
IQ dimensions
Ranks are among models scored in each dimension. Ranges are model-based estimates, not calibrated confidence intervals.
DimensionIQPosition · 70–160RankEvidencevs Top 10
opus-495% range (model-based, uncalibrated)Top-10 median#1 in dimension100 = average human
Benchmark results
13 of 39 Composite IQ benchmarks have a published result for opus-4. Benchmarks without a result stay listed so gaps are visible.
Abstract Reasoning IQ 77 · measuredBest: #52 of 68 on ARC-AGI-22/5
BenchmarkScorePercentileRankLeader · source
ARC-AGI-2
Full source leaderboard reconciliation · Oct 23
8.6%
#52 / 68
Leader gpt-6-astra · 95.0%
Full source leaderboard reconciliation · Oct 23
Full source leaderboard reconciliation · Oct 23
ARC-AGI-1
Full source leaderboard reconciliation · Oct 23
35.7%
#59 / 68
Leader fable-5 · 98.5%
Full source leaderboard reconciliation · Oct 23
Full source leaderboard reconciliation · Oct 23
Not yet reported
ARC-AGI-3Chess PuzzlesMystery Game Puzzles
Mathematical Reasoning IQ 93 · measuredBest: #61 of 72 on FrontierMath Tier 44/5
BenchmarkScorePercentileRankLeader · source
FrontierMath Tier 4
Epoch AI FrontierMath Tier 4 v2 · Sep 22
4.2%
#61 / 72
Leader gpt-6.1-sol · 100%
Epoch AI FrontierMath Tier 4 v2 · Sep 22
Epoch AI FrontierMath Tier 4 v2 · Sep 22
MathArena
Full source leaderboard reconciliation · Oct 28
9.9%
#60 / 64
Leader gpt-6.1-sol · 84.0%
Full source leaderboard reconciliation · Oct 28
Full source leaderboard reconciliation · Oct 28
FrontierMath Tier 1-3
Epoch AI FrontierMath Tiers 1-3 v2 · Sep 22
4.1%
#80 / 84
Leader gpt-6-astra · 93.7%
Epoch AI FrontierMath Tiers 1-3 v2 · Sep 22
Epoch AI FrontierMath Tiers 1-3 v2 · Sep 22
Not yet reported
ProofBench 1.1
Academic Reasoning IQ 112 · measuredBest: #102 of 147 on GPQA Diamond3/6
BenchmarkScorePercentileRankLeader · source
GPQA Diamond
Artificial Analysis v4.3.2 · Oct 27
79.6%
#102 / 147
Leader gpt-6-astra · 96.1%
Artificial Analysis v4.3.2 · Oct 27
Artificial Analysis v4.3.2 · Oct 27
SciCode
Artificial Analysis model leaderboard · Sep 10
39.8%
#123 / 167
Leader opus-5.5 · 66.9%
Artificial Analysis model leaderboard · Sep 10
Artificial Analysis model leaderboard · Sep 10
Humanity's Last Exam
Artificial Analysis v4.3.2 · Oct 27
12.3%
#136 / 167
Leader opus-5.5 · 61.4%
Artificial Analysis v4.3.2 · Oct 27
Artificial Analysis v4.3.2 · Oct 27
Not yet reported
CritPtMMLU-ProMMMU-Pro
Programmatic Reasoning IQ 109 · measuredBest: #49 of 61 on LiveCodeBench1/6
BenchmarkScorePercentileRankLeader · source
Not yet reported
IOI V2Terminal-Bench 4.0ProgramBenchSWE-rebenchMirrorCode
Computer Use IQ 75 · estimatedNo published results0/5
No published results yet for Computer Use. The 75 shown is estimated from opus-4's other dimensions and will be replaced as results come in. How estimates work
BrowseCompOSWorld-VerifiedMCP AtlasArena.ai Agent ArenaAgents' Last Exam
Reliability IQ 109 · measuredBest: #48 of 83 on BullshitBench v23/6
BenchmarkScorePercentileRankLeader · source
BullshitBench v2
Full source leaderboard reconciliation · Oct 23
34.0%
#48 / 83
Leader opus-4.8 · 94.0%
Full source leaderboard reconciliation · Oct 23
Full source leaderboard reconciliation · Oct 23
AA Long Context Reasoning v1.1
Artificial Analysis v4.3.2 · Oct 27
69.3%
#114 / 154
Leader kimi-k3 · 88.7%
Artificial Analysis v4.3.2 · Oct 27
Artificial Analysis v4.3.2 · Oct 27
IFBench
Artificial Analysis v4.3.2 · Oct 27
53.7%
#76 / 96
Leader minimax-m3 · 82.9%
Artificial Analysis v4.3.2 · Oct 27
Artificial Analysis v4.3.2 · Oct 27
Not yet reported
SimpleQA VerifiedaaOmniscienceFACTS Grounding
Knowledge Work IQ 90 · estimatedNo published results0/6
No published results yet for Knowledge Work. The 90 shown is estimated from opus-4's other dimensions and will be replaced as results come in. How estimates work
AA-Briefcase v1.1GDPval-AA v2.1AutomationBench-AAGDP.pdfAA-AnalystAgentEnterpriseOps-Gym-AA
Release & availability
Release details on record for this model.
- Released
- Developer
- Anthropic
- Weights
- ProprietaryHosted access only
- API price
- $15 in · $75 outper 1M tokens · full pricing
About this score
How much of opus-4's IQ is measured, and how the rest is estimated.
13/ 39benchmark results
5/ 7dimensions measured
2estimated
2/5Abstract
4/5Math
3/6Academic
1/6Coding
0/5Computer Use
3/6Reliability
0/6Knowledge Work
Bar height = share of benchmarks with resultsEstimatedNo score
Measured results are shown as published
Every score in the benchmark tables comes from its source unchanged. Composite IQ averages all seven dimensions equally.
Estimates fill the gaps
Computer Use and Knowledge Work have no published results yet, so their IQ is estimated from opus-4's other dimensions.
A missing result is not a zero
Benchmark versions and evaluation harnesses can differ between sources, so small gaps between models may not be meaningful.
Compare opus-4
Side-by-side pages for the models it is most often weighed against.
#1 overall
gpt-6.1-sol
IQ141 46 higherEffective cost$6.30 8.2× cheaper
Anthropic #1
opus-5.5
IQ141 46 higherEffective cost$35.73 1.4× cheaper
Closest IQ
intellect-3
IQ95 same IQEffective cost$1.56 33.2× cheaper
Most similar profile
o1
IQ95 same IQEffective cost$74.68 1.4× pricier
Similar price
Fugu Ultra v2.0
IQ109 14 higherEffective cost$44.78 1.2× cheaper
#3 overall
Gemini 4 Argon
IQ140 45 higher
opus-4Comparison model
Frequently asked questions
Quick answers about opus-4, drawn from the same data as the rest of this page.
How AI IQ scores models →Get this data from the API →- What is the IQ of opus-4?
- opus-4 has an estimated IQ of 95, which ranks #149 out of 176 public models on the AI IQ leaderboard. The score combines seven equally weighted reasoning dimensions using measured benchmark results and conservative estimates for missing coverage.
- What is opus-4 best at?
- Among the dimensions with published benchmark results, opus-4 ranks highest in Programmatic Reasoning (IQ 109, #99 of 177) and Academic Reasoning (IQ 112, #128 of 203). Its lowest-ranked measured dimension is Abstract Reasoning (IQ 77, #175 of 201).
- What is the EQ of opus-4?
- opus-4 doesn't have an EQ score yet. EQ (emotional reasoning) is calculated from EQ-Bench 4 and AttuneBench, and neither has published a result for opus-4. AI IQ doesn't estimate EQ from other benchmarks, so the score appears once one of those results is published.
- Which benchmarks has opus-4 been tested on?
- opus-4 has published results on 13 of the 39 benchmarks behind AI IQ's Composite IQ, including BullshitBench v2, GPQA Diamond, SciCode, AA Long Context Reasoning v1.1 and ARC-AGI-2.
- How much does opus-4 cost?
- opus-4 costs $15.00 per million input tokens and $75.00 per million output tokens. Adjusted for how many tokens it actually consumes on real tasks, its effective cost works out to $51.65 per million input-plus-output tokens.
- Is opus-4 open source?
- No — opus-4 is a proprietary model. Its weights are not publicly available, so it is used through hosted APIs and products.
- Who developed opus-4?
- opus-4 was developed by Anthropic, based in the United States.
- When was opus-4 released?
- opus-4 was publicly released on May 22, 2025.
- How large is the context window of opus-4?
- AI IQ hasn't verified an input context limit for opus-4 from its developer's documentation, so none is listed rather than guessing.
- How fast is opus-4?
- AI IQ doesn't have independent speed measurements for opus-4 yet. Speed comes from independent tests of a model's hosted API, which aren't available for every model — especially new, restricted-access, or self-hosted ones.