Technical report -> https://huggingface.co/ServiceNow-AI/Apriel-1.5-15b-Thinker/blob/main/Apriel-1.5-Thinker.pdf

Summary

Apriel-1.5-15b-Thinker is a multimodal reasoning model in ServiceNow’s Apriel SLM series which achieves competitive performance against models 10 times it’s size. Apriel-1.5 is the second model in the reasoning series. It introduces enhanced textual reasoning capabilities and adds image reasoning support to the previous text model. It has undergone extensive continual pretraining across both text and image domains. In terms of post-training this model has undergone text-SFT only. Our research demonstrates that with a strong mid-training regimen, we are able to achive SOTA performance on text and image reasoning tasks without having any image SFT training or RL.

Highlights

• Achieves a score of 52 on the Artificial Analysis index and is competitive with Deepseek R1 0528, Gemini-Flash etc.
• It is AT LEAST 1 / 10 the size of any other model that scores > 50 on the Artificial Analysis index.
• Scores 68 on Tau2 Bench Telecom and 62 on IFBench, which are key benchmarks for the enterprise domain.
• At 15B parameters, the model fits on a single GPU, making it highly memory-efficient.