Comment by ghrl

This is quite confusing, indeed, but the limits are generous and transparent once you understand the concept.

There are two plans, OpenCode Go and Go Plus, for 10$/mo and 40$/mo.

With your plan, you get a specific monthly amount of money you can use, with separate weekly and 5-hour limits to not spend all at once.

The amount of money you can use depends on the model, but the usage percentage adds up regardless. For example, on the Haiku Model, the monthly limit is 15$/mo, as you read from the page. For other models, such as DeepSeek V4.1 Flash, the limit is now 80$/mo (the increased it from 60$ recently).

This might seem odd, but the stated purpose of OpenCode Go is "Low cost coding models for everyone", so the limits on the open models tend to be higher.

The math works like this: You use 5$ no Haiku and 20$ on a 60$ model, then your monthly limit is used 66.6%, meaning 5$ of Haiku or 20$ of a 60$ model remaining.

Another way to view this is as follows: You have 10$ flat usage per month, and the "higher usage on each model" is actually just a discount on the token price. So Haiku is discounted to 10$/15$=66.6%, DeepSeek to 12.5% and so on.

Go Plus just means you get more usage, though the rate is not always 4x.

To answer your remaining questions: The billing is based on the actual provider's api costs, so input/cached/output tokens. I suppose the "requests" number is estimated. The OpenCode TUI and your account website actually show the real session prices, which also helps with an understanding how expensive the agents are on raw (unsubsidized) api pricing. The usage limits are rolling, so there is a 5-hour, a weekly and a monthly limit. The 5h is 20% of the monthly limit, and the weekly is 50% (not sure on the exact numbers).

I would agree that the pricing is confusing, but for the price you get surprisingly much usage, especially on the 60$ models. Give DeepSeek V4.1 a try, you get nearly unlimited usage and it's around Sonnet/Opus level.