Remy Reference/Models/Language/Claude 5.5 Opus

Claude 5.5 Opus

Claude 5.5 Opus, a language model from Anthropic.

modelOverride: { model: "claude-5-5-opus" }

AAnthropic·Released September 2026

Pricing

Input: $4.00 / 1M
Output: $20.00 / 1M
Cached input: $0.20 / 1M
Cached input: $5.00 / 1M
Cached input: $8.00 / 1M

Specifications

Context window: 1,000,000 tokens
Max output: 128,000 tokens
Released: September 2026
Model string: claude-opus-5-5
Capabilities: VisionLarge contextReasoningToolsMCP

Parameters

Model options, passed in modelOverride.config.

Parameter	Type	Default	Range / options
`effort` Thinking is always on. Effort is the only control for depth, latency, and cost. The default is Medium. Higher effort improves quality but uses more tokens and is slower. Recommended: Medium for general use, High for coding and agentic work, Extra High or Max for the hardest tasks, Low where you previously disabled thinking.	Select	medium	lowmediumhighxhighmax
`tools`	Tools	—	—
`mcpServers`	MCP servers	—	—

Use this model

await mindstudio.generateText({
  message: "...",
  modelOverride: {
    model: "claude-5-5-opus",
    config: {
      effort: "medium",
    },
  },
});