Claude Instant 1.0

anthropic

Anthropic's first fast and affordable model. Claude Instant 1.0 offered quick response times for simple tasks with a 9K context window. This model has been retired and is no longer available for use.

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Example Use Cases

Ultra-fast simple text task

High-volume classification or tagging

Basic chat with minimal latency

Technical Specifications

Context Window

9,000 tokens

Max Output

4,096 tokens

Cache Miss Cost

$0.80 per 1M tokens

Non-Reasoning Cost

$2.40 per 1M tokens

Web Search Cost

$15 per 1K calls

Code Execution Cost

$0.19 per 1K calls

⚠️ Legacy

Made legacy on

Reason

Retired model

Recommended Replacement

Claude Haiku 4.5