Using LongCat-2.0 on LongCat API Platform

Quick Start

1. 1
   Create an account at LongCat API Platform and generate an API key.
2. 2
   Use the LongCat API Platform SDK or REST API to call LongCat-2.0 — see the documentation for request format.
3. 3
   You'll be billed $0.30/1M input, $1.20/1M output tokens. See full pricing.

Code Examples

About LongCat API Platform

LongCat API Platform provides public API access to LongCat-2.0 with OpenAI and Anthropic API formats, including a 1M token context window and up to 128K output tokens for LongCat-2.0. The platform supports pay-as-you-go billing and token packs for LongCat-2.0.

LongCat API Platform is Meituan LongCat's public model API service. It serves LongCat-2.0 through OpenAI-compatible chat completions and Anthropic-compatible messages endpoints.

Pricing on LongCat API Platform

Capabilities

About LongCat-2.0

LongCat-2.0 is Meituan LongCat's large-scale MoE language model for coding, long-context, and agentic tasks. The model has 1.6T total parameters, roughly 48B activated per token, native 1M context support, and API access through OpenAI- and Anthropic-compatible LongCat endpoints. Public model-card text says weights are coming soon, so current public access is API-based rather than open-weight.