Anthropic
Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports long-horizon agentic work, complex multi-step coding, and memory-driven tasks where coherence over extended sessions matters. It features a 1M token context window, 128K max output tokens, adaptive thinking, and strong multimodal capabilities.
claude-opus-4.8Pricing
~91%- Input
- $0.430716 / 1,000,000 tokens
- Output
- $2.153579 / 1,000,000 tokens
- Cache read
- $0.043072 / 1,000,000 tokens
- Cache write
- $0.538395 / 1,000,000 tokens
Discount history
Model details
- Input
- text
- Output
- text
- Context window
- 1,000,000 tokens
- Maximum output
- 128,000 tokens
- Availability
- $4.1KUncapped capacity
- Updated
- 11/8/2026, 3:58:06 AM UTC
Capacity is reserved when your request is accepted.
Capabilities
ChatStreamingTool callingVisionReasoningJSON mode
Supported parameters
frequency_penaltyinclude_reasoningmax_completion_tokensmax_tokensparallel_tool_callspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstreamstream_optionstemperaturetool_choicetoolstop_puserverbosity