Open-weights Inkling 2 Small takes #1 US open model spot in Agent Arena at $0.26/task
arena · x · 2026-11-13
With its open-weights release, Thinking Machines' Inkling 2 Small is now the #1 US open model in Arena's Agent Arena and #2 among all open models, with a +2.9% net improvement score across 11.5k real-world agentic sessions (#22 overall).
Key stats:
- +10.9% Steerability, the highest of any open model
- $0.26 median cost per task, 4.7x cheaper than the top open model Kimi K3.1 Pro ($1.22)
- The only US model in the Agent Arena open top 10
It also scored 1647 pts in Code Arena WebDev (#1 US open model), up 239 pts from Inkling-Small. Arena evaluates models with real usage traces instead of human preference votes.
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