# Together AI — GLM-5.3 vs. GPT-5.6 Sol on DeepSWE: Cost, Coding, and Routing

- Company: Together AI (together.ai)
- Announced: 2026-08-21T00:00:00+00:00
- Subject: Inference platform
- Models affected: GLM-5.3, GPT-5.6 Sol
- Pricing: $3.99 per rollout for GLM-5.3, $8.37 per rollout for GPT-5.6 Sol
- Source: https://www.together.ai/blog/glm-5-3-vs-gpt-5-6-sol-on-deepswe-cost-coding-and-routing
- Record: https://forck.live/items/4331-glm-5-3-vs-gpt-5-6-sol-on-deepswe-cost-coding-and-routing

Together AI compares GLM-5.3 and GPT-5.6 Sol on the DeepSWE benchmark, showing that a cascade strategy (use GLM-5.3 first, escalate to Sol on failure) solves 85.9% of tasks at a lower cost than using Sol alone.

## Evidence

Verbatim from https://www.together.ai/blog/glm-5-3-vs-gpt-5-6-sol-on-deepswe-cost-coding-and-routing:

> Don't pick one. Run GLM-5.3 first, escalate to GPT-5.6 Sol when the tests fail. That cascade solves 85.9% of DeepSWE tasks at $6.61 each.

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