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Anthropic Advanced

Claude Opus 5

Claude Opus 5 is Anthropic's active 1M-context model for complex coding and enterprise agents, with 128K output and $5/M input pricing.

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In plain English

What is this model and why does it matter?

Claude Opus 5 is Anthropic's latest Opus model for complex coding, deep reasoning and enterprise agentic work.

Complex codingEnterprise agentsDeep reasoningLong-context researchProfessional workflows
Model overview

Claude Opus 5: features, use cases and important details

Claude Opus 5 is Anthropic’s current Opus model for complex agentic coding and enterprise work.

Verified model facts

Anthropic lists a 1M-token context window, 128K maximum output, May 2026 knowledge cutoff, adaptive thinking and text/image input.

Current status

It is active across the Claude API and major cloud platforms at $5/M input and $25/M output.

Best fit

It is best for difficult software engineering, enterprise agents, research and large-context professional analysis.

Limitations

It is still a premium proprietary model and can be unnecessarily expensive for routine workloads that Sonnet 5 can handle.

Claude Opus 5 capabilities and use cases

In addition, its main capabilities include 1M context, 128K output, Adaptive thinking, Coding, Agents and Vision. For example, common use cases include Software engineering, Enterprise agents, Deep research, Professional analysis and Long documents.

Who should consider Claude Opus 5?

In practice, this model may suit Complex coding, Enterprise agents, Deep reasoning, Long-context research and Professional workflows. Also, notable strengths include Strong current Opus model, 1M context, Large output limit and Broad cloud availability. However, review trade-offs such as May 2026 static cutoff without tools, Can still make reasoning or tool-use errors and Premium cost for high-volume workloads before adopting it.

Claude Opus 5 pricing and access

Meanwhile, $5.00 per 1M input tokens and $25.00 per 1M output tokens. Prompt cache reads cost $0.50/M and Batch API offers a 50% input/output discount. Current Claude API pricing is $5/M input and $25/M output, half the standard Fable 5.1 rate.

Official resources and verification

Use the official model website, official documentation and pricing or release source to confirm current availability, limits and pricing. Product details can change after publication, so rely on primary documentation for final decisions.

Compare with other AI models

Next, continue your research in the AI models directory, Anthropic models and General Purpose Language Model models. Compare providers, pricing, modalities and practical limitations side by side to choose the right model for your workflow.

How to evaluate Claude Opus 5 responsibly

First, test the model with a small set of realistic tasks before relying on it for production work. Also, check response quality, consistency, latency, supported file types, context limits and the effort required to review its output. For sensitive or regulated work, examine the provider’s privacy, data-retention, regional-processing and security documentation before submitting private information.

However, AI systems sometimes return incomplete, outdated or confidently incorrect information. Therefore, check important claims against trusted sources and test generated code before deployment. Pricing, quotas and model availability can also change without notice. Finally, revisit the official documentation before you plan a long-term integration or a large-volume workload.

Get started

How to use this model

  1. Create a Claude API key.
  2. Call model claude-opus-5.
  3. Use adaptive thinking and select effort based on task difficulty.
  4. Connect tools for agentic workflows.
  5. Use caching or Batch API to reduce repeated-input cost.
Copy and try

Example prompts

  • Analyze this enterprise system and design a safe migration plan.
  • Complete this difficult coding task using tools and verify the implementation.
  • Review these long documents and produce a rigorous recommendation.
Capabilities

What it can do

  • 1M context
  • 128K output
  • Adaptive thinking
  • Coding
  • Agents
  • Vision
  • Tool use
  • Structured outputs
Best for

Practical use cases

  • Software engineering
  • Enterprise agents
  • Deep research
  • Professional analysis
  • Long documents
Pricing

What does it cost?

$5.00 per 1M input tokens and $25.00 per 1M output tokens. Prompt cache reads cost $0.50/M and Batch API offers a 50% input/output discount.

Input$5.00 / 1M tokens
Output$25.00 / 1M tokens
Simple summaryCurrent Claude API pricing is $5/M input and $25/M output, half the standard Fable 5.1 rate.

What stands out

  • Strong current Opus model
  • 1M context
  • Large output limit
  • Broad cloud availability
  • Lower price than Fable

Things to consider

  • More expensive than Sonnet 5
  • Proprietary
  • Moderate latency
Limitations

Important restrictions and trade-offs

  • May 2026 static cutoff without tools
  • Can still make reasoning or tool-use errors
  • Premium cost for high-volume workloads
SimplifyAITools verdict

Our editorial take

Anthropic’s best general starting point for complex high-value work before moving up to Fable 5.1.

References

Primary sources

  1. Open source 1 ↗
  2. Open source 2 ↗
  3. Open source 3 ↗