AnthropicReleased Nov 9, 2026
NewProprietary
Claude Mythos 5.2
Claude Mythos 5.2 doesn't have a Composite IQ yet. A score needs measured results in at least two of the seven dimensions, and none have published results so far.
Composite IQ ?
—
Effective cost
$71.96/1M
$8 in · $40 out
Speed
Not measured
No speed data yet
Context
1Mtokens
1,000,000 tokens in
Evidence
0of 7 dims
0 of 39 benchmarks
IQ profile
Seven dimensions, averaged equally into Composite IQ
Profile not available yetThe radar appears once at least two dimensions have measured benchmark results.
MeasuredEstimated
#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
Claude Mythos 5.2Top-10 median#1 in dimension100 = average human
Benchmark results
0 of 39 Composite IQ benchmarks have a published result for Claude Mythos 5.2. Benchmarks without a result stay listed so gaps are visible.
Abstract Reasoning IQ 120 · estimatedNo published results0/5
No published results yet for Abstract Reasoning. The 120 shown is estimated from Claude Mythos 5.2's other dimensions and will be replaced as results come in. How estimates work
ARC-AGI-3ARC-AGI-2ARC-AGI-1Chess PuzzlesMystery Game Puzzles
Mathematical Reasoning no scoreNo published results0/5
No published results yet for Mathematical Reasoning. How estimates work
FrontierMath Tier 4FrontierMath Tier 1-3ProofBench 1.1MathArenaAIME
Academic Reasoning IQ 100 · estimatedNo published results0/6
No published results yet for Academic Reasoning. The 100 shown is estimated from Claude Mythos 5.2's other dimensions and will be replaced as results come in. How estimates work
Humanity's Last ExamGPQA DiamondCritPtSciCodeMMLU-ProMMMU-Pro
Programmatic Reasoning no scoreNo published results0/6
No published results yet for Programmatic Reasoning. How estimates work
LiveCodeBenchIOI V2Terminal-Bench 4.0ProgramBenchSWE-rebenchMirrorCode
Computer Use no scoreNo published results0/5
No published results yet for Computer Use. How estimates work
BrowseCompOSWorld-VerifiedMCP AtlasArena.ai Agent ArenaAgents' Last Exam
Reliability no scoreNo published results0/6
No published results yet for Reliability. How estimates work
SimpleQA VerifiedaaOmniscienceBullshitBench v2IFBenchAA Long Context Reasoning v1.1FACTS Grounding
Knowledge Work no scoreNo published results0/6
No published results yet for Knowledge Work. How estimates work
AA-Briefcase v1.1GDPval-AA v2.1AutomationBench-AAGDP.pdfAA-AnalystAgentEnterpriseOps-Gym-AA
Release & availability
Facts from the publisher's announcement and documentation.
- Released
- Developer
- Anthropic
- Access
- Restricted to organizations verified through Anthropic cybersecurity or life-sciences programs
- Weights
- ProprietaryHosted access only
- Inputs
- textimage
- Context
- 1,000,000 tokens
- API price
- $8 in · $40 outper 1M tokens · full pricing
What Anthropic says
- Mythos 5.2 shares Fable 5.2’s underlying model, context window, and standard token pricing.
- Anthropic offers Mythos 5.2 with fewer cybersecurity and biology safeguards for verified beneficial uses.
Limitations
- Access requires verification; public listing does not mean unrestricted API access.
- Publisher benchmark figures include internal evaluations and task-specific harnesses; no independent compatible result is yet mapped to this identity.
Publisher statements, not AI IQ measurements.
About this score
How much of Claude Mythos 5.2's IQ is measured, and how the rest is estimated.
0/ 39benchmark results
0/ 7dimensions measured
2estimated
0/5Abstract
0/5Math
0/6Academic
0/6Coding
0/5Computer Use
0/6Reliability
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
Abstract Reasoning and Academic Reasoning have no published results yet, so their IQ is estimated from Claude Mythos 5.2's other dimensions. Missing benchmarks can also draw on its predecessor, Mythos 5.1; a predecessor is an estimation input, not evidence that this model has the predecessor's measured results.
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 Claude Mythos 5.2
Side-by-side pages for the models it is most often weighed against.
#1 overall
fable-5.2
IQ144Effective cost$73.69 about the same
#2 overall
Gemini 4 Carbon
IQ142
#3 overall
gpt-6.1-sol
IQ141Effective cost$6.34 11.4× cheaper
#4 overall
opus-5.5
IQ140Effective cost$35.97 2.0× cheaper
#5 overall
Gemini 4 Argon
IQ139
#6 overall
gpt-6-astra
IQ139Effective cost$34.62 2.1× cheaper
Claude Mythos 5.2Comparison model
Frequently asked questions
Quick answers about Claude Mythos 5.2, 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 Claude Mythos 5.2?
- Claude Mythos 5.2 does not yet have an estimated IQ. AI IQ publishes a composite score once a model has source-backed benchmark results in at least two of its seven capability dimensions.
- What is Claude Mythos 5.2 best at?
- There isn't any published benchmark data to judge that yet. None of the seven dimensions AI IQ scores has a measured result for Claude Mythos 5.2, so its strengths and weaknesses can't be compared with other models.
- What is the EQ of Claude Mythos 5.2?
- Claude Mythos 5.2 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 Claude Mythos 5.2. AI IQ doesn't estimate EQ from other benchmarks, so the score appears once one of those results is published.
- Which benchmarks has Claude Mythos 5.2 been tested on?
- None yet. Claude Mythos 5.2 has no published results on the 39 benchmarks behind AI IQ's Composite IQ. AI IQ only uses published, source-backed results, so its profile fills in as evaluations of this model appear.
- How much does Claude Mythos 5.2 cost?
- Claude Mythos 5.2 costs $8.00 per million input tokens and $40.00 per million output tokens. Adjusted for how many tokens it actually consumes on real tasks, its effective cost works out to $71.96 per million input-plus-output tokens.
- Is Claude Mythos 5.2 open source?
- No — Claude Mythos 5.2 is a proprietary model. Its weights are not publicly available, so it is used through hosted APIs and products.
- Who developed Claude Mythos 5.2?
- Claude Mythos 5.2 was developed by Anthropic, based in the United States.
- When was Claude Mythos 5.2 released?
- Claude Mythos 5.2 was publicly released on November 9, 2026.
- How large is the context window of Claude Mythos 5.2?
- Claude Mythos 5.2 supports a context window of 1,000,000 tokens — the amount of text it can consider in a single request.
- How fast is Claude Mythos 5.2?
- AI IQ doesn't have independent speed measurements for Claude Mythos 5.2 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.