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Arena ranks Inkling 2 Small #31 overall in Agent Arena

AIArena says Thinking Machines Lab's Inkling 2 Small ranks #31 overall in Agent Arena, up about 18 percentage points from Inkling-Small's #56 with −18%. Among open models it would rank #9, and its median cost per task is $0.25, 70% lower than Kimi K3 (Max), with full open weights coming soon.
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Exciting news: With open weights coming soon, Inkling 2 Small by @thinkymachines is set to become the #1 US open-weights model in Agent Arena!

Inkling 2 Small landed #31 overall with +0.08% net improvement, up about 18 percentage points from Inkling-Small at #56 with −18%.

Among all open models, it would rank #9, just 0.5 percentage pts from Kimi K3 (Max) at #5 and within 2.0 pts of DeepSeek-V4.1-Flash-20261017 (Max) at #3.

Inkling 2 Small’s median cost per task is $0.25, 70% lower than Kimi K3 (Max). See its position relative to the Pareto frontier below.

Congrats to the @thinkymachines team on this release!

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ICYMI: Once its weights are released, Inkling 2 Small from @thinkymachines would be the #1 US open model. With 1648 pts, it’s #8 overall among labs in the Code Arena: WebDev! Inkling 2 Small is available now for fine-tuning and inference on Tinker, with full weights coming soon. Congrats again to the @thinkymachines team!
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Original title: Exciting news: With open weights coming soon, Inkling 2 Small by @thinkymachines is set to become the #1 US open-weights model in Agent A...

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AI agentsEvals & benchmarks