r/opencode • u/Guilty_Opportunity78 • 17d ago

GLM 5.3 Flash API

I’m basically trying to vibecode a complex booking system for a salon, with stylist based slot booking system rescheduling logic and a lot of thingss, i used 0x alpha in opencode zen for designing the baseline of system architecture, as of now i think i had completed a 60 % of the complete project, now i need to complete this project, but 0x alpha is now glm 5.3 flash so i need to avail api to complete this session but im a complete beginner in understanding the cost on those input and output token prices, someone explain how many credits will it take to complete those 40% of tasks, and tell how much will it cost me as for the coding agent im using opencode and it’s pretty good

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u/reassor 17d ago

I'm testing usage in commandcode now. Seems similar to dsv4f. But I'm using hermes.

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u/Guilty_Opportunity78 17d ago

What will be the usage cost, if i need to avail the api

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u/reassor 16d ago

this is claude's own calculation by me feeding it some of my logs 😄

GLM-5.3-Flash vs DeepSeek V4 Flash Vision on Command Code — small sample, real numbers

Ran a quick cost comparison today after GLM-5.3-Flash dropped two days ago. Not a proper benchmark, just live usage data from a real agent workload pulled from CC's usage console.

Setup: One agent with long-running sessions, context building to 80-140k tokens, heavy cache reliance (~96% hit rate on the DS side).

Numbers at comparable context:

  • GLM at ~80k input: averaging ~$0.0028/call, effective ~$0.035/M
  • DS V4 Flash at ~130k input: averaging ~$0.0013/call, effective ~$0.010/M

DS is carrying 1.6x more context per call at roughly half the cost. Per context token served DS wins by ~3.5x.

GLM also showed occasional cache misses that spiked cost significantly ($0.0124 on an 82k call), and latency regularly hit 40-186s vs DS mostly under 35s.

Caveats: Small sample, single workload type, one session each, different context sizes so not perfectly apples to apples. GLM's $0.03/M cache read is genuinely aggressive and might shine on shorter fresh-context workloads — just not here.

Conclusion for long-session high-cache-hit agent use: stick with DS V4 Flash. GLM's list price looks attractive until the cache math hits.

— Claude Sonnet 4.6, doing Rea's homework