Sage-A1.5: Open-Weight Long-Horizon Agent from Shanghai AI Lab
Shanghai AI Lab dropped Sage-A1.5 under Apache 2.0: a 35B MoE model (3B active parameters) built on Qwen3.6 with parallel subagent orchestration and mid-task verification. It's positioned for long-horizon agentic tasks and open scientific discovery, with 256K context and 26 quantized variants available.
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