Claude Opus 4

v20250522

Anthropic

Modelflagshipcodingreasoninghipaa-eligible
92
Exceptional
About This Model

Anthropic's most powerful model released May 2025. Exceptional reasoning, coding (72.5-79.4% SWE-bench in high-compute), and agentic capabilities.

Last Evaluated: November 17, 2025
Official Website

Trust Vector Analysis

Dimension Breakdown

🚀Performance & Reliability
+

Best-in-class performance. 79.4% SWE-bench in high-compute mode (highest). 90% AIME in high-compute. Exceptional for complex reasoning.

task accuracy code

Industry-standard coding benchmarks

Evidence
SWE-bench Verified72.5% standard, 79.4% in high-compute mode
highVerified: 2025-11-17
task accuracy reasoning

PhD-level reasoning benchmarks

Evidence
GPQA Diamond79.6% (83.3% high-compute)
AIME Math75.5% (90.0% high-compute)
highVerified: 2025-11-17
task accuracy general

Comprehensive knowledge testing

Evidence
MMLU88.8%
highVerified: 2025-11-17
output consistency

Internal testing

Evidence
Anthropic DocumentationHighly consistent with extended thinking
highVerified: 2025-11-17
latency p50

Median latency

Evidence
Anthropic API Documentation~2.5s for standard prompts
mediumVerified: 2025-11-17
latency p95

95th percentile

Evidence
mediumVerified: 2025-11-17
context window

Official specification

Evidence
Anthropic API Documentation200K context, 32K max output
highVerified: 2025-11-17
uptime

Historical uptime data

Evidence
Anthropic Status Page99.95% uptime
highVerified: 2025-11-17
🛡️Security
+

Flagship security with ASL-3 standard and Constitutional AI. Strongest safety guardrails.

prompt injection resistance

OWASP LLM01 testing

Evidence
Anthropic Safety ResearchSuperior resistance via Constitutional AI
highVerified: 2025-11-17
jailbreak resistance

Adversarial prompt testing

Evidence
Anthropic Constitutional AIStrongest jailbreak resistance
highVerified: 2025-11-17
data leakage prevention

Privacy policy analysis

Evidence
Anthropic Privacy StatementNo training on user data
highVerified: 2025-11-17
output safety

Comprehensive safety testing

Evidence
Anthropic Safety EvaluationsASL-3 safety standard
highVerified: 2025-11-17
api security

Security features review

Evidence
Anthropic API DocumentationEnterprise-grade API security
highVerified: 2025-11-17
🔒Privacy & Compliance
+

Exceptional privacy. Ephemeral data handling, HIPAA eligible, strongest compliance for regulated industries.

data residency

Enterprise documentation review

Evidence
Anthropic EnterpriseData residency options
highVerified: 2025-11-17
training data optout

Policy analysis

Evidence
Anthropic Privacy PolicyNo API data training by default
highVerified: 2025-11-17
data retention

Terms review

Evidence
Anthropic Terms of ServiceEphemeral processing
highVerified: 2025-11-17
pii handling

Data protection review

Evidence
Anthropic Privacy DocsCustomer responsible for PII redaction
highVerified: 2025-11-17
compliance certifications

Certification verification

Evidence
Anthropic Trust CenterSOC 2 Type II, GDPR, HIPAA eligible
highVerified: 2025-11-17
zero data retention

Data handling review

Evidence
Anthropic API DocsEphemeral data processing
highVerified: 2025-11-17
👁️Trust & Transparency
+

Excellent transparency with extended thinking and comprehensive system card. Best-in-class guardrails.

explainability

Reasoning transparency evaluation

Evidence
Extended ThinkingExtended thinking exposes reasoning
highVerified: 2025-11-17
hallucination rate

Factual QA testing

Evidence
SimpleQA BenchmarkStrong factual accuracy
mediumVerified: 2025-11-17
bias fairness

Bias benchmark evaluation

Evidence
Anthropic Responsible ScalingRegular bias testing
mediumVerified: 2025-11-17
uncertainty quantification

Qualitative assessment

Evidence
Model BehaviorExcellent uncertainty expression
highVerified: 2025-11-17
model card quality

Documentation review

Evidence
Claude 4 System CardComprehensive system card
highVerified: 2025-11-17
training data transparency

Public disclosure review

Evidence
Anthropic Public StatementsGeneral description, cutoff March 2025
mediumVerified: 2025-11-17
guardrails

Safety mechanism analysis

Evidence
Constitutional AIStrongest Constitutional AI guardrails
highVerified: 2025-11-17
⚙️Operational Excellence
+

Flagship operational excellence. Available on API, Amazon Bedrock, and Google Vertex AI.

api design quality

API design review

Evidence
Anthropic APIEnterprise-grade RESTful API
highVerified: 2025-11-17
sdk quality

SDK quality review

Evidence
Anthropic SDKsHigh-quality Python, TypeScript SDKs
highVerified: 2025-11-17
versioning policy

Versioning policy review

Evidence
Anthropic API Versioning6-month deprecation notice
highVerified: 2025-11-17
monitoring observability

Monitoring tools review

Evidence
Anthropic ConsoleComprehensive usage dashboard
highVerified: 2025-11-17
support quality

Support assessment

Evidence
Anthropic SupportPriority support for Opus users
highVerified: 2025-11-17
ecosystem maturity

Ecosystem analysis

Evidence
Integration EcosystemMature ecosystem, Bedrock, Vertex AI
highVerified: 2025-11-17
license terms

License review

Evidence
Anthropic Commercial TermsClear enterprise terms
highVerified: 2025-11-17
Strengths
  • +Highest performance: 79.4% SWE-bench in high-compute (best overall)
  • +90% AIME math in high-compute mode (exceptional reasoning)
  • +Extended thinking for complex multi-step reasoning
  • +Strongest privacy: ephemeral data, HIPAA eligible, ASL-3 security
  • +200K context window for large documents
  • +Best-in-class Constitutional AI safety guardrails
Limitations
  • !Premium pricing ($15/$75 per 1M tokens)
  • !Higher latency (~2.5s p50, 5.5s p95)
  • !Training cutoff March 2025
  • !Overkill for simple tasks (cost and latency)
  • !32K max output vs 64K for Sonnet 4
Metadata
pricing
input: $15.00 per 1M tokens
output: $75.00 per 1M tokens
notes: Flagship pricing. Batch API 50% discount. Prompt caching up to 90% savings.
last verified: 2025-11-17
context window: 200000
max output tokens: 32000
languages
0: English
1: Spanish
2: French
3: German
4: Italian
5: Portuguese
6: Japanese
7: Korean
8: Chinese
9: Arabic
10: Hindi
modalities
0: text
1: image (input)
2: document
api endpoint: https://api.anthropic.com/v1/messages
open source: false
architecture: Transformer-based with Constitutional AI and extended thinking
parameters: Not disclosed
training cutoff: March 2025
safety level: ASL-3

Use Case Ratings

code generation

Best-in-class coding. 79.4% SWE-bench in high-compute mode. Exceptional for complex software engineering.

customer support

Excellent but potentially over-powered and expensive for standard customer support.

content creation

Exceptional creative writing with nuanced understanding and natural style.

data analysis

Superior analytical capabilities with extended thinking for complex analysis.

research assistant

Outstanding for research. Extended thinking enables deep analysis. 200K context for long documents.

legal compliance

Best for legal work. HIPAA eligible, ephemeral data, ASL-3 security. Careful reasoning.

healthcare

Flagship for healthcare. HIPAA eligible, strongest privacy, careful medical reasoning.

financial analysis

Exceptional for complex financial modeling and analysis. 90% AIME math in high-compute.

education

Excellent for education with patient, detailed explanations and strong knowledge base.

creative writing

Outstanding creative capabilities with nuanced character development and storytelling.