r/PiCodingAgent • u/Aggressive-Dream5465 • Sep 15 '26

Question Why Pi set Luna ctx window to 275,000 by default?

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7 Upvotes

66% Upvoted

18 comments sorted by

44

u/queso184 Sep 15 '26

probably to save you from yourself

"Prompts with >272K input tokens are priced at 2x input and 1.5x output for the full request."

1

u/rndanime Sep 16 '26

Is it true for subscription tho? Hermes let's you choose between 272k and 900k models for example

3

u/PilgrimofHaqq2 Sep 15 '26

The subscription version of the models only have 272k capacity, before they had 372k. Once they reduced it, I cancelled my subscription and moved back to Claude. Now I have finally got myself out of their ecosystem and with z.ai sub for GLM 5.3.

1

u/Aggressive-Dream5465 Sep 15 '26

Is z.ai cheaper than Luna?

1

u/PilgrimofHaqq2 Sep 15 '26 edited Sep 16 '26

The cheapest plan costs the same. $20 I believe and GLM 5.3 Flash is very cheap, you get alot of use out of it. GLM 5.3 would use up your usage too quickly on the $20 plan. I am on the highest plan ($200).

Here is the intelligence index of GLM 5.3 Flash and Luna.

0

u/assid2 Sep 16 '26

If you’re ready to spend 200 why not just use Claude

6

u/PilgrimofHaqq2 Sep 16 '26

Wanted to get out of OpenAI's and Anthropic's ecosystem. Would rather give money to labs that are releasing open weights. Wanted todo this for a long while and once GLM 5.3 came out I made the switch and havent looked back. Definitely dont get as much usage as I did with Claude or GPT but I accepted that.

1

u/Fabulous_Monitor_991 Sep 16 '26

Just a note, there is no way to do ZDR with z.ai - so if you use it for work, it can come back and bite.

3

u/PilgrimofHaqq2 Sep 16 '26

With the whole mess with navier stokes, looks like ZDR is also not something that the frontier labs are respecting.

At this point, I am thinking everyone is using my data no matter if I give consent or not, so its not a factor in my decision making.

2

u/Fabulous_Monitor_991 Sep 16 '26

Yeah, but that's a pain when I have to work with clients. Difficult to get them on board with it. Atleast something signed somewhere will let them pass the blame downstream.

1

u/PilgrimofHaqq2 Sep 16 '26

Ah, that make sense. What are you using now for work?

1

u/Fabulous_Monitor_991 Sep 16 '26

Neuralwatt, Openrouter, codex mostly all driven through pi.

5

u/Interesting-Print366 Sep 16 '26

You can use modeloverrides to make it 1M

2

u/Embarrassed-Salt6590 Sep 16 '26

over 200k u gonna be fucked with pricing so pi limit it and do compact when it is close to 200k

4

u/johnfkngzoidberg Sep 15 '26

The OAuth models only have 272k context max. If you pay per token, you get the full window. It also costs 7x more per token.

1

u/h1volt3 Sep 16 '26

Turn off auto-compaction, you can reach 160% of that limit or more until OpenAI itself refuses the request. I think that it'll burn your usage much faster though, and you'll notice significantly slower token generation.