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Spark-X2.5-4B: a 4B model matching 2–3 larger models on agents, code & math

This story is from 2026-09-03. It is preserved in the archive; the latest stories are on the live feed.

Spark-X2.5-4B is a 4B open model that goes toe-to-toe with models 2–3Γ— its size on agents, coding, and math . Here's the full benchmark table vs comparable open models: πŸ€– Agents The 4B leads its size class and beats much larger models: τ³-bench 30.4 (Qwen3.5-9B 9.3, Gemma4-12B 13.3) BrowseComp 40.…

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  1. 2026-09-03 03:02 Β· DEV Community β€” AI
    Spark-X2.5-4B: a 4B model matching 2–3 larger models on agents, code & math

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