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Toss Securities launches open API to place stock orders with AI, integrates ChatGPT and Claude

Toss Securities on Aug. 13 officially launched an open API service that links with large language models, allowing users to place and check stock orders without separate coding knowledge. The company said the service supports integration with external LLMs such as ChatGPT and Claude. After connecting an issued open API key to an external LLM, investors can enter order instructions in natural language for execution.