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

- Company: Together AI (together.ai)
- Announced: 2026-08-28T00:00:00+00:00
- Subject: Inference platform
- Open weights: yes
- Models affected: GLM-5.3, GLM-5.3 Flash
- Pricing: $3.99 per rollout (GLM-5.3), $0.24 per rollout (GLM-5.3 Flash)
- Source: https://www.together.ai/blog/glm-5-3-vs-glm-5-3-flash-on-deepswe-cost-coding-and-routing
- Record: https://forck.live/items/5017-glm-5-3-vs-glm-5-3-flash-on-deepswe-cost-coding-and-routing

An analysis comparing GLM-5.3 and its distilled sibling GLM-5.3 Flash on the DeepSWE benchmark, finding that the Flash variant retains 94% of solved tasks at one-seventeenth the cost but loses reliability rather than capability, with a cascade strategy solving 80.9% of tasks at $1.70 each.

## Evidence

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

> That cascade solves 80.9% of DeepSWE tasks at $1.70 each. GLM-5.3 alone solves 69.0% at $3.99. Twelve points better, 57% lower cost.

---

Record: https://forck.live/items/5017-glm-5-3-vs-glm-5-3-flash-on-deepswe-cost-coding-and-routing
Catalogue: https://forck.live/llms.txt
Feed: https://forck.live/feed.md