# LongCat debuts LongCat-2.5 with 1.6T parameters and visual token support

Digest AI · Generative AI & Models · published 2026-11-02T21:42:04Z

Canonical: https://digestai.news/story/longcat-debuts-longcat-2-5-with-1-6t-parameters-and-visual-token-suppo

## Summary

LongCat released LongCat-2.5 on November 1, 2026, a multimodal mixture-of-experts model with 1.6 trillion total parameters and 48 billion activated per token. The model improves on LongCat-2.0 with native visual token processing, enabling unified handling of text and images. It uses discrete visual tokens, Residual Vector Quantization, and a shared semantic space for visual and textual inputs, with offline preprocessing to optimize performance and memory efficiency.

LongCat-2.5 incorporates long-horizon reinforcement learning for complex coding tasks, including full-project builds and agentic coding. Training includes synthesized tasks, verifiable tests, and real-world failure trajectories. The model achieves 86% higher per-device throughput in long-sequence training and 43.3% higher prefill throughput in inference compared to baselines. Benchmark results show 55.4 on 3DCodeBench and 78.6 on Vision2Web, with API access available via OpenAI- and Anthropic-compatible endpoints. Pricing starts at $0.30 per million uncached input tokens, with discounts for cached inputs.

## Key points

- LongCat-2.5 has 1.6 trillion parameters and 48 billion activated per token, with native visual token support for multimodal tasks
- Model achieves 86% higher per-device throughput in training and 43.3% higher prefill throughput in inference compared to baselines
- API access available with 1M-token context window and pricing starting at $0.30 per million uncached input tokens

## Why it matters

LongCat-2.5’s multimodal capabilities and long-horizon reasoning could advance agentic AI for complex coding, design, and project tasks, while its efficiency improvements may lower deployment costs for enterprises.

## Sources

1. [LongCat-2.5 Debuts With 1.6T Parameters and Native Visual Tokens](https://unite.ai/longcat-2-5-debuts-with-1-6t-parameters-and-native-visual-tokens) (Unite.AI, 2026-11-02)

## Cite

Digest AI, "LongCat debuts LongCat-2.5 with 1.6T parameters and visual token support", 2 November 2026, https://digestai.news/story/longcat-debuts-longcat-2-5-with-1-6t-parameters-and-visual-token-suppo

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