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LLMS • CURATED • UPDATED MAY 28, 2026

Claude Opus 4.8

Anthropic's powerful enterprise model from May 2026

Claude Opus 4.8 is Anthropic's high-capability model released on May 28, 2026. It targets autonomous software engineering, long-document analysis, and complex reasoning with strong instruction following and extended context support.

Pricing Enterprise
Platforms web, api
API No
Open Source No
Modalities LLMs, IDEs & Coding Tools
Best For Best for Enterprise Reasoning
Date Added 2026-05-28

Claude Opus 4.8 continues Anthropic's reputation for reliable, steerable models. It is a top choice for enterprises that need a capable assistant with strong safety characteristics and nuanced writing.

Access Claude Opus 4.8 through the Claude web or mobile app, or via the Anthropic API. It is best suited for demanding tasks such as writing detailed reports, analyzing long contracts, refactoring large codebases, and building multi-step agents. Usage is metered according to your Anthropic plan.

Artificial Analysis Intelligence Index · llm
55.7
Rank #5 · 2026-08-04
SWE-bench Verified · ide-coding
88.6%
Rank #3 · 2026-07-22
1 Use detailed system prompts to set style and constraints
2 Break large tasks into milestones for better reliability
3 Upload full documents to leverage long context
4 Pair with Claude Sonnet for faster, cheaper subtasks
5 Review code changes carefully on autonomous runs
Google Antigravity 2.0 Claude Fable 5 NotebookLM Claude Opus 5 GPT-5.6 Sol

Analyzing Legal Contracts

Extract obligations, risks, and terms from lengthy contracts.

STEPS:
  1. Upload the contract documents
  2. Ask for a structured summary of key terms
  3. Request identification of risks and anomalies
  4. Cross-reference clauses across multiple files
  5. Export findings to a spreadsheet or memo

Autonomous Code Refactor

Refactor a large module across many files with minimal guidance.

STEPS:
  1. Describe the refactor goal and constraints
  2. Provide the relevant codebase context
  3. Let Claude plan the changes
  4. Review and approve each file edit
  5. Run tests and iterate on failures
Enterprise

Enterprise pricing — contact Claude Opus 4.8 for a custom quote and contract terms.

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Q

Is Claude Opus 4.8 free?

A

Claude Opus 4.8 is offered as an enterprise solution; contact the provider for pricing.

Q

Does Claude Opus 4.8 have an API?

A

No, Claude Opus 4.8 does not appear to offer a public API.

Q

What is Claude Opus 4.8 best for?

A

Claude Opus 4.8 is best for Best for Enterprise Reasoning. Claude Opus 4. Claude Opus 4.8 continues Anthropic's reputation for reliable, steerable models. It is a top choice for enterprises that need a capable assistant with strong safety characteristics and nuanced writing.

Q

What platforms does Claude Opus 4.8 support?

A

Claude Opus 4.8 supports web, api.

Q

Is Claude Opus 4.8 open source?

A

No, Claude Opus 4.8 is not open source.

Q

How do I get started with Claude Opus 4.8?

A

Access Claude Opus 4.8 through the Claude web or mobile app, or via the Anthropic API. It is best suited for demanding tasks such as writing detailed reports, analyzing long contracts, refactoring large codebases, and building multi-step agents. Usage is metered according to your Anthropic plan.

Q

How do I use Claude Opus 4.8?

A

Claude Opus 4.8 is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at strong reasoning and instruction following.

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