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Iris-mini

AllSpark ResearchOpen WeightsPending Human Review

Iris-mini is AllSpark Research’s open-weight search-specialized language model, published in the September 3 Iris paper. It is post-trained from Qwen3.6-35B-A3B through alternating supervised fine-tuning and reinforcement learning, learning what to search, how to read evidence, and when enough information has been collected. Its mixture-of-experts backbone has 35B total and 3B active parameters, with a 256K context. Apache-licensed weights and an evaluation harness are available. The checkpoint generates reasoning, tool calls, and final language answers; search itself is performed by external tools. Published scores depend strongly on context resets and retry policies.

2026-09-03
35B total, 3B active
Hybrid-attention Mixture-of-Experts Transformer
Apache-2.0

Specifications

Parameters
35B total, 3B active
Architecture
Hybrid-attention Mixture-of-Experts Transformer
License
Apache-2.0
Context Window
262,144 tokens
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Iris
Finetuned From
Qwen3.6-35B-A3B
API Access
Not Available
Chat Interface
Not Available

Capabilities & Limitations

Capabilities
search reasoningtool callingevidence synthesislong context
Known Limitations
Requires an external search harness and toolsContext-discard and retry settings materially affect reported performanceGenerated answers can omit or misinterpret evidence
Notable Use Cases
research question answeringevidence-gathering agentssearch-policy research
Function Calling Support
Yes
Tool Use Support
Yes

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