Claude Opus 4.8
AnthropicLarge Language ModelProprietaryAnthropic's recommended model for complex agentic coding and enterprise work. Offers a 1M context window and adaptive thinking that defaults to high effort, making it the current flagship for demanding multi-step tasks.
Abilities
Use Cases
Available in Tools
Availability
How to Use
Pros
- Recommended by Anthropic for complex agentic coding and enterprise work
- 1M token context window with 128K max output — holds full codebases and extensive documentation in context
- Adaptive thinking defaults to high effort on all surfaces — optimizes reasoning depth automatically
- Best balance of capability and cost in the premium Claude tier at $5/$25 per MTok
- Available on AWS Bedrock, Google Vertex AI, and Microsoft Foundry for enterprise compliance
Cons
- Closed source — no self-hosting or model customization
- Slower than Sonnet 5 and Haiku 4.5 for latency-sensitive applications
- At $5/1M input still costly for very high-volume workloads
What to Use It For
Perfect For
Anthropic's recommended model for complex multi-step coding tasks — high-effort adaptive thinking by default
Strong across reasoning, document analysis, and multi-step problem solving at a practical price point
1M context window lets it hold entire repos or book-length documents in context
Good For
Strong quality-per-cost ratio for comprehensive reports, documentation, and editorial content
Reliable tool use and instruction following for complex automation pipelines
Not Recommended
Moderate latency — use Sonnet 5 or Haiku 4.5 for interactive applications
Try instead: Claude Sonnet 5, Claude Haiku 4.5
At $5/1M input still costly at scale — Sonnet 5 or Haiku 4.5 are better picks
Try instead: Claude Sonnet 5, Claude Haiku 4.5
Do Not Use For
Text and vision LLM — no image generation capabilities
Try instead: DALL-E 3, FLUX.1
Cloud-only closed model — requires Anthropic API connection
Try instead: Llama 4 Scout