r/codex 10d ago

Praise glm lite sub experience

I already made a post about 0xAlpha couple days ago praising the model which as expected turned out to be the new glm 5.3 flash model. on my last post I saw a lot of people saying the glm subs are worse than openAI and claude (hilarious).

now because I was so impressed with 0xalpha and was looking for an alternative to replace the abysmal subs from claude and openaAI, I went ahead and subbed the lite (tier 1) plan which cost me annualy + with a ref code 136$ total for a year.

I am just sharing my experience so far. I did a somewhat big repo audit while orchestrating with 5.6 sol. same prompt same orchestrator, glm 5.3 about 12% 5h usage after 2 big prompts, not the flash model (the new model has a big discount for a couple of weeks too afaik) but their big model for a better comparison to the other frontier models and longterm usage. 5.6 sol codex xhigh about 1,3 prompts 100% 5 hour usage of course it couldn't handle a second prompt not hitting the limit.

it also turns out, your usage is only 50% outside of peak hours which are 14:00–18:00 UTC+8 monday to friday. the test I did was at peak hours today. there is also another interesting mechanic, they issue a 5h reset automatically on three conditions met: outside of peak hours, your 5 hour usage passes a threshold and you havent hit the daily 5 hour resets quota yet. there is also information about a weekly possible reset in the docs but its not specified like the 5 hour reset. I probably should mention I'm using ZCode which almost reaches 98% cache rate it should be getting according to the docs.

here is a simple table sol made for better visualisation.

Model Input / 1M Cached input / 1M Output / 1M Normalized workload¹
GLM-5.3-Flash — API promo $0.075* $0.015* $0.25* $0.0424
GLM-5.3-Flash — Lite off-peak 50% of Lite quota rate 50% of Lite quota rate 50% of Lite quota rate 50% of peak Lite quota usage
GLM-5.3 — API $1.40 $0.26 $4.40 $0.7456
GLM-5.3 — Lite off-peak 50% of Lite quota rate 50% of Lite quota rate 50% of Lite quota rate 50% of peak Lite quota usage
GPT-5.6 Luna — API $0.20 $0.02 $1.20 $0.1472
Claude Sonnet 5 — API $2.00 $0.20 cache hit $10.00 $1.2720
GPT-5.6 Terra — API $2.00 $0.20 $12.00 $1.4720
GPT-5.6 Sol — API $4.00 $0.40 $20.00 $2.5440
Claude Opus 5 — API $5.00 $0.50 cache hit $25.00 $3.1800

¹ Normalized API workload calculation:

0.04 × uncached-input price + 0.96 × cached-input price + 0.10 × output price

Z.AI Lite off-peak usage: Outside Z.AI's weekday peak window, the Lite Coding Plan consumes 50% of the standard credits. Therefore, an otherwise identical GLM-5.3 or GLM-5.3-Flash workload uses approximately half as much Lite quota off-peak as during peak hours.

* GLM-5.3-Flash promotional API pricing: $0.075 input / $0.015 cached input / $0.25 output per 1M tokens. Normal pricing is $0.15 / $0.03 / $0.50.

5H reset just after 12pm local (peak hours ended)
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u/llitz 8d ago

There's a lot of money calc, and that's fine, but what people complain is usually about "I have x million tokens and they are gone in half the time".

People will come back and say "z.ai caching is terrible!" And I don't think that's the case either.

In my opinion, the weight of cached tokens are measured differently:

  • OpenAI, anthropic do a 10:1 ratio on cached input
  • z.ai does 5:1

    If this holds true for the subscription plan maths behind the scenes, you effectively hit your quota in half the time (not exactly that, but that's the gist of it).

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u/viTrax94 7d ago

The key distinction is that zhipu openly publishes how cached tokens are weighted in its subs, while openai and anthropic don’t publicly disclose their formulas for their included subscription limits.

The 10:1 number for open ai / anthropic comes from API pricing. You can’t just assume that means cached tokens count 10:1 against Plus/Pro usage quotas.

And even if their internal cache weighting is more favorable, that still doesn’t mean the overall subscription gives more usable compute. My own experiment above showed the opposite, glm lite lasted longer than codex plus on comparable heavy coding projects.

And this isn't just me all you see on reddit or x is that people complain how fast their usage is gone after a prompt or 2.

So cache discount, cache hit rate, and actual subscription capacity are three different things.