LongCat-2.0

Meituan LongCat-2.0 is a reasoning model with tool calling and a 1M-token context window. It is the first version of the LongCat line in the registry, released on 2026-06-30. The model accepts text and returns text. It has a context window of 1,000,000 tokens and a maximum output of 131,072 tokens. Weights are open. It supports reasoning mode and tool calling. Pricing starts at $0.30 per million input tokens and $1.20 per million output tokens, with cached input at $0.006 per million tokens. It is served by 7 hosts.

First version of its line in the registry.

Range across the hosts that serve it: up to $0.7746 per 1M input tokens.

• ·1M-token context window
• ·131,072-token max output
• ·Tool calling support
• ·Reasoning mode enabled
• ·Open weights

• Reach for it for long-context reasoning tasks
• Reach for it for tool-augmented workflows
• Reach for it for tasks needing large output generation

7 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window size?

The context window is 1,000,000 tokens.

Does it support tool calling?

Yes, tool calling is supported.

Are the weights open?

Yes, the weights are open.