Apriel-1.6-15b-Thinker

A reasoning-focused large language model with enhanced thinking capabilities

Date: December 2025

Description:
Contributed to the development and release of Apriel-1.6-15b-Thinker, a 15-billion parameter multimodal reasoning model in ServiceNow’s Apriel SLM series. The model achieves state-of-the-art performance against models 10 times its size, with extensive improvements in text and vision reasoning while maintaining token efficiency.

Apriel-1.6 scores 57 on the Artificial Analysis Index, outperforming models like Gemini 2.5 Flash, Claude Haiku 4.5, and GPT OSS 20b, while achieving performance on par with Qwen3 235B A22B. The model reduces reasoning token usage by over 30% compared to the previous version.

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