100000
context tokens
Undisclosed
parameters
Proprietary
license
Mar 2023
released
Claude Instant was Anthropic’s original budget model tier, introduced alongside Claude 1 in March 2023, well before the Claude 3 naming scheme existed. It traded some accuracy for speed and lower cost, and Anthropic pitched it for dialogue, text analysis, summarization, and document comprehension where a full-size Claude model wasn’t necessary. It supported a 100,000 token context window and text only, no image input. Anthropic notified developers in September 2024 that Claude Instant and the original Claude 1 models were being retired, and it has since been fully replaced by the Haiku line, making it a legacy model no longer recommended for new projects.
// similar models in Language
Claude Sonnet 5
The first Sonnet-class Claude model to top Anthropic's flagship writing benchmarks
Anthropic · Language · Paid
DeepSeek V3
DeepSeek's efficient mixture-of-experts model trained at a fraction of rival costs
DeepSeek · Language · Free
Qwen3-235B-A22B
Alibaba's flagship open-weight mixture-of-experts model, the cheapest capable frontier model
Alibaba · Language · Free
Claude 3.5 Sonnet
The 2024 Claude release that popularized computer-use agent capabilities
Anthropic · Language · Paid
Claude Haiku 4.5
Anthropic's fastest and cheapest current-generation model
Anthropic · Language · Paid
Command R Plus
Cohere's flagship RAG- and tool-use-optimized model above Command R
Cohere · Language · Free