Releasesby GlyphWhat's New:
The tool_resources parameter in POST /studio/v1/maestro/runs will be deprecated in October 2025 . Please use the tools parameter instead. For more information, check the tools parameter documentation .
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Deprecation Notice: tool_resources Parameter
Release Date : September 18, 2025
Introducing Jamba Reasoning 3B
Release Date : October 8, 2025
What's New:
We’re excited to announce Jamba Reasoning 3B, a compact open-source reasoning model that redefines what’s possible on-device. Built on AI21 Labs’ novel SSM-Transformer hybrid architecture, this 3B-parameter model delivers 2–5× efficiency gains over competitors while achieving leading intelligence benchmarks .
Key Highlights
Smarter, faster, smaller : Hybrid SSM-Transformer efficiency enables long-context reasoning with minimal compute. Runs anywhere : Deploy locally on your phone or computer via llama.cpp or LM Studio. Enterprise-ready : Supports intelligent agentic workflows, reducing cloud costs and latency.
Get Started:
- Check out the AI21-Jamba-Reasoning-3B and Jamba-Reasoning-3B-GGUF cards. Read the full blog post.
Mistral models are now available in AI21 Maestro!
Release Date : August 7, 2025
What's New:
You can now access the mistral-small , mistral-8x7b and mistral-7b models directly in Maestro's API and playground. These models use AI21’s API key, so you don’t need to provide your own. See the full list of available models .
Together AI Open-Source Models Now Available in AI21 Maestro
Release Date : November 27, 2025