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On October 22, 2026, Modal released the open-source training server Spindle, which is compatible with the Tinker API. According to Modal's official engineering blog, Spindle can run in one's own Modal workspace, is billed by GPU time rather than tokens, requires only executing spindle deploy to deploy, supports full-parameter training and multiple LoRAs, and covers a variety of open-source models. In the comparison provided by the official source, for the DAPO-math single-turn task with 8-card H200 training, 8-card H200 inference, and 8 clients sharing, the price is 1.99 USD per million output tokens, 80% lower than Tinker. There are currently no subsequent development facts.
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Modal releases open-source training server Spindle, compatible with the Tinker APIDevelopments
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Modal releases open-source Tinker-compatible training server Spindle
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Oct 22
Modal official engineering blogFirst-partySelected
Modal releases open-source training server Spindle, compatible with the Tinker API
Modal releases the open-source training server Spindle, which can run in your own Modal workspace, is compatible with the Tinker API, and bills by GPU time rather than tokens. Deployment only requires running spindle deploy, and it supports full-parameter training and multiple LoRAs, covering a variety of open-source models. In the official comparison, a single-round DAPO-math task with 8-card H200 training, 8-card H200 inference, and 8 clients sharing costs $1.99 per million output tokens, 80% lower than Tinker.