AnthropicProprietaryReasoningCodingMultimodal
Claude Opus
Anthropic’s highest-capability Claude tier for deep reasoning, long-context analysis, coding, and careful instruction following.
Vision · Tool calling · Thinking · MCP · Coding
Last reviewed: 24 July 2026
Overview
Anthropic’s highest-capability Claude tier for deep reasoning, long-context analysis, coding, and careful instruction following.
Capabilities
- Vision: Yes
- Audio: No
- Tool calling: Yes
- Thinking: Yes
- MCP: Yes
- Coding: Yes
- Structured output: Yes
Technical specifications
- Provider
- Anthropic
- License
- Proprietary
- Context window
- 200K
- Parameters
- Undisclosed
- Architecture
- Transformer (proprietary)
- Release
- 2025
- Modalities
- Text, Image
- Vision
- Yes
- Audio
- No
- Tool calling
- Yes
- Thinking
- Yes
- MCP
- Yes
- Open weights
- No
- API
- Yes
- Pricing (input)
- API tiered (see Anthropic pricing)
- Pricing (output)
- API tiered (see Anthropic pricing)
Supported modalities
Text · Image
Context window
200K (200,000 tokens)
Pricing
Input: API tiered (see Anthropic pricing)
Output: API tiered (see Anthropic pricing)
Availability
API: Yes
Chat UI: Yes
Open weights: No
Claude.ai and Anthropic API; also via major cloud partners.
Use cases
- Long-document analysis and synthesis
- High-stakes writing and policy drafting
- Agentic coding and computer-use style workflows
- Research assistants with tool use
Strengths
- Excellent reasoning and writing quality
- Strong safety / constitutional AI posture
- Large context for document-heavy work
Limitations
- Closed weights
- Higher cost than mid-tier Claude models
- Audio modality limited vs some peers
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