Together AI· Inference platformModel update

DeepSeek V4 Pro 0813 vs Claude Fable 5 on DeepSWE: Cost, Coding, and Routing

Together AI compares DeepSeek V4 Pro 0813 and Claude Fable 5 on DeepSWE, finding that a cascade strategy (Pro first, escalate to Fable) solves 82.7% of tasks at $8.28 each, outperforming Fable alone (69.7% at $21.63) with 62% lower cost.

From the source

Run DeepSeek V4 Pro 0813 first, escalate to Claude Fable 5 only when it fails. That cascade solves 82.7% of DeepSWE tasks at $8.28 each. Fable alone solves 69.7% at $21.63. Thirteen points better, 62% cheaper.

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Announced

17 Aug 2026 00:00 UTC