Claude Opus 4.8
Anthropic’s current premium Opus model for complex reasoning, long-horizon agentic coding, and high-autonomy professional work.
Capability profile
- Input
- $5 / 1M tokens
- Output
- $25 / 1M tokens
- Cached input
- $0.50 / 1M tokens cache hits; $6.25 5m cache writes; $10 1h cache writes
- Context
- 1M tokens
- Free tier
- No / unknown
- API
- Available
- Subscription
- Claude paid plans and enterprise surfaces; available through Claude API and partner clouds per docs
- Open-source status
- Closed
- High-autonomy agentic coding
- complex reasoning
- careful professional analysis
- and long-context workflows where reliability matters.
- Claude Code
- long-running agent workflows
- multi-step codebase work
- high-stakes document analysis
- and professional reasoning tasks.
- Budget-sensitive high-volume inference and simple tasks where Sonnet/Haiku-class models are sufficient.
- Cheap bulk summarization
- simple chatbots
- or latency/cost-sensitive commodity workloads.
Opus 4.8 looks like Anthropic's current premium reliability play: less about raw novelty than making high-autonomy agent work steadier, sharper, and easier to trust.
Anthropic’s current premium Opus model for complex reasoning, long-horizon agentic coding, and high-autonomy professional work.
Post Reboot take
Opus 4.8 looks like Anthropic’s current premium reliability play: less about raw novelty than making high-autonomy agent work steadier, sharper, and easier to trust.
Strengths
Best for: High-autonomy agentic coding, complex reasoning, careful professional analysis, and long-context workflows where reliability matters.
Weakest at: Budget-sensitive high-volume inference and simple tasks where Sonnet/Haiku-class models are sufficient.
Best workflows: Claude Code, long-running agent workflows, multi-step codebase work, high-stakes document analysis, and professional reasoning tasks.
Example use cases: Codebase-scale migrations, autonomous engineering investigations, legal/financial document workflows, data-agent reasoning, and deep technical review.