No longer supported

This model is legacy (released August 2023) and is no longer actively maintained or recommended by Anthropic. Consider using their current flagship model instead.

legacyfastllm Proprietary

Claude Instant 1 (Legacy)

by Anthropic· Released August 2023· Cutoff Early 2023

Claude Instant 1 is a faster, more affordable version of Claude, designed for low-latency and high-throughput applications. It offers a balance of speed and intelligence, making it suitable for tasks that require quick responses without the full depth of Claude 2. This legacy model has been superseded by newer Claude Instant versions.

Official Site API Docs

Input cost

$0.80 per 1M tokens

Output cost

$2.40 per 1M tokens

Context window

100K tokens

Max output

4096 tokens

Modalities

text

License

proprietary

Capabilities

Text GenerationCode GenerationSummarizationQuestion AnsweringStreamingJSON Mode

Best For

Fast, cost-effective text generation and conversational AI for high-volume applications.

Strengths

Low latency and fast response times
Cost-effective pricing
Handles long context up to 100K tokens
Good for simple to moderately complex tasks

Limitations

Less capable than Claude 2 and later models on complex reasoning
No vision or multimodal capabilities
Legacy status means no further updates
May produce less nuanced responses compared to newer models

Use Cases

Customer support chatbots

Content summarization

Code generation and assistance

Data extraction and classification

Real-time translation

Simple Q&A systems

High-volume text processing

Improvements Over Previous Model

Introduced as a faster, cheaper alternative to Claude 1
Lower latency compared to Claude 1
Reduced pricing: $0.80/$2.40 per 1M tokens vs Claude 1's $1.63/$5.51
Context window increased from 9K to 100K tokens
Improved performance on coding and summarization tasks

Back to all models