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What is Claude Opus 4.8?
Claude Opus 4.8 is an upgraded version of Anthropic's Opus class of AI models. It builds on Claude Opus 4.7 with improvements across benchmarks and serves as a more effective collaborator for coding, agentic tasks, and professional work. The model is designed to be more reliable, honest, and capable of handling long-running, complex tasks with high consistency.
How to use Claude Opus 4.8?
Claude Opus 4.8 can be accessed through the web interface at claude.ai and is also available to developers via the Claude API. Users can control the amount of effort the model puts into a task via a new effort control setting available on all plans.
Feature 1: Dynamic Workflows
Available in research preview for Claude Code, this feature allows Claude to plan work and run hundreds of parallel subagents to tackle codebase-scale migrations across hundreds of thousands of lines of code.
Feature 2: Effort Control
A new setting in claude.ai and Cowork that lets users choose how much effort Claude puts into a response, allowing for a balance between speed and deep reasoning quality.
Feature 3: Enhanced Honesty and Reliability
The model is approximately four times less likely than its predecessor to allow coding flaws to pass unremarked and is more likely to flag uncertainties rather than making unsupported claims.
Use Case 1: Autonomous Engineering
Used for codebase-scale migrations and complex autonomous engineering workloads that require high consistency and instruction following.
Use Case 2: Professional Knowledge Work
Ideal for high-stakes professional workflows in legal and tax sectors, offering fiduciary-grade reasoning and accuracy for attorney-level tasks.
Use Case 3: Complex Data Analysis
Capable of reasoning directly over PDFs, diagrams, and unstructured content for data and knowledge work with improved token efficiency.
Claude Opus 4.8 Login
Users can access Claude Opus 4.8 by logging in at claude.ai.
Claude Opus 4.8 Pricing
Regular usage pricing is $5 per million input tokens and $25 per million output tokens. Fast mode pricing is $10 per million input tokens and $50 per million output tokens.