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Claude 4.6 Opus

Claude 4.6 Opus, a language model from Anthropic.
modelOverride: { model: "claude-4-6-opus" }
Anthropic·Released February 2026
Pricing
Input
$5.00 / 1M
Output
$25.00 / 1M
Input
$10.00 / 1M
Output
$37.50 / 1M
Cached input
$0.50 / 1M
Cached input
$6.25 / 1M
Cached input
$10.00 / 1M
Specifications
Context window
1,000,000 tokens
Max output
128,000 tokens
Released
February 2026
Model string
claude-opus-4-6
Capabilities
VisionLarge contextReasoningToolsMCP
Parameters
Model options, passed in modelOverride.config.
ParameterTypeDefaultRange / options
reasoning
When enabled, the model will explain its thought process step-by-step before providing a final answer. This can help users understand how the model arrived at its conclusions, but may result in longer responses. Opus 4.6 uses adaptive thinking mode. The model dynamically decides when and how much to think.
Selectfalsefalsetrue
effort
Controls how much the model thinks vs. how quickly it responds. Higher effort produces better quality but uses more tokens and is slower. Recommended: High for coding and agentic work; Medium for general use; Low for short, latency-sensitive tasks. Only applies when Reasoning is enabled.
Selectmediumlowmediumhigh
toolsTools——
mcpServersMCP servers——
Use this model
await mindstudio.generateText({
  message: "...",
  modelOverride: {
    model: "claude-4-6-opus",
    config: {
      reasoning: "false",
      effort: "medium",
    },
  },
});