Large Language ModelText GenerationClaude 3 FamilyEnriched

Claude 3 Opus

Claude 3 Opus is Anthropic’s flagship Claude 3 series large language model optimized for high-level reasoning, complex analysis, and long-context understanding. It supports very large context windows and strong performance on coding, math, and multilingual tasks, targeting enterprise and advanced professional use cases.

by AnthropicReleased 2024-03-04Proprietary
Context Window
200K
MMLU
86.8%
HumanEval
71.0%
API Access
Available

Key Capabilities

  • +Advanced reasoning and analysis across technical, legal, and business domains
  • +Strong coding assistance, including code generation, refactoring, and debugging
  • +High performance on math and quantitative reasoning tasks
  • +Robust multilingual understanding and generation
  • +Long-context handling for large documents and multi-step workflows
  • +Safety-focused behavior with Anthropic’s Constitutional AI alignment
  • +Tool use and API integration via structured prompts

Limitations

  • -Proprietary model with no access to weights or on-prem deployment
  • -May still hallucinate or produce incorrect answers, especially on niche or ambiguous queries
  • -Limited transparency into training data and exact parameter count
  • -Higher latency and cost compared with smaller Claude 3 models like Sonnet or Haiku

Benchmark Performance

math

math

MATH

60.1%
math

Grade School Math 8K

95.0%

reasoning

reasoning

Graduate-Level Google-Proof Q&A

50.4%
reasoning

Massive Multitask Language Understanding

86.8%

conversation

conversation

Chatbot Arena Elo

1248.0Elo
conversation

Multi-Turn Benchmark

9.0score

coding

coding

HumanEval

84.9%

Alternatives & Comparisons

OpenAI’s flagship GPT-4–class model with strong multimodal capabilities and broad ecosystem integrations.

Strengths
  • + Strong general performance across tasks
  • + Rich ecosystem and tooling
Weaknesses
  • - Proprietary and closed weights
  • - Region and policy constraints for some users

Google’s flagship Gemini 1.5 model with very long context and tight integration with Google Cloud and Workspace.

Strengths
  • + Extremely long context window
  • + Strong integration with Google ecosystem
Weaknesses
  • - Proprietary and closed weights
  • - Access and quotas may vary by region and account tier

Other Claude 3 Models