Now Available: ByteDance Seed 2.0 and Qwen3-Coder-Next — Frontier Reasoning and Code Agents

Two models that shipped in the past two weeks are live on the Hanzo AI Gateway.

Seed 2.0 Pro — ByteDance's Frontier Reasoning Model

Released February 14 by ByteDance's Seed Team, Seed 2.0 Pro is a fully multimodal reasoning model (text, image, video input) that competes directly with GPT-5.2 and Gemini 3 Pro on benchmarks. It ranks top-6 on LMSYS Chatbot Arena and top-4 on Vision Arena.

Key specs:

• Full multimodal — text, image, and video input
• State-of-the-art on MathVision and MotionBench
• Strong agentic tool-calling — built for agent workflows

curl https://llm.hanzo.ai/v1/chat/completions \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -d '{"model": "bytedance-seed/seed-2.0-mini", "messages": [{"role": "user", "content": "..."}]}'

Also available: Seed 2.0 Mini for high-throughput batch processing.

Qwen3-Coder-Next — Open-Source Coding Agent

Released February 3, Qwen3-Coder-Next is an 80B-parameter MoE model with only 3B active parameters, purpose-built for coding agents. It achieves 70.6% on SWE-bench Verified while running on a single consumer workstation with 46 GB RAM.

Key specs:

• 80B total / 3B active — ultra-sparse MoE
• 256K context window
• Apache 2.0 — fully open for commercial use
• 70.6% SWE-bench Verified — frontier-class code generation
• 10x throughput vs dense models of equivalent quality

curl https://llm.hanzo.ai/v1/chat/completions \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -d '{"model": "qwen/qwen3-coder-next", "messages": [{"role": "user", "content": "..."}]}'

The Gateway Advantage

Every model — from ByteDance's proprietary Seed 2.0 to Alibaba's open-source Qwen3-Coder-Next — is accessible through the same API key. No new accounts, no new SDKs. Just change the model name.

100+ models at hanzo.ai.