Together AI· Inference platform

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

The blog post compares DeepSeek V4 Pro 0813 and Claude Fable 5 on the DeepSWE benchmark, finding that DeepSeek V4 Pro 0813 is 90x cheaper and achieves comparable or better performance with multiple attempts. A cascade routing strategy (Pro first, escalate to Fable) solves 82.7% of tasks at $8.28 each, outperforming Fable alone.

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.

together.ai

Announced

17 Aug 2026 00:00 UTC

Detected

18 Aug 2026 10:07 UTC (+34h after)

Pricing

At $0.24 a rollout, DeepSeek V4 Pro 0813 is 90x cheaper than Fable ($21.63)