Question 1

GLM Max vs Google AI Ultra $200 (Antigravity) for coding: which gives more building hours per dollar?

Accepted Answer

At p50 peak, GLM Max returns 0.27 building h/week per $/month (45 h/week for $168/mo) and Google AI Ultra $200 (Antigravity) returns 0.23 building h/week per $/month (45 h/week for $200/mo), so GLM Max gives more building hours per dollar; GLM Max runs a benchmark-measured model for building (54.0/100 quality), the other does not; Google AI Ultra $200 (Antigravity) hours are guessed — treat them as a guess.

Question 2

What do GLM Max and Google AI Ultra $200 (Antigravity) cost?

Accepted Answer

$168/mo and $200/mo. Comparisons only pair plans within 1.5× of each other on price.

Question 3

Which of the two has an off-peak rate?

Accepted Answer

GLM Max does — peak Mon–Fri 07:00–11:00 London, building 45 h/week p50 peak → 90 h/week p50 off-peak. Google AI Ultra $200 (Antigravity) does not (limits refresh every 5h, weekly cap; no off-peak rate).

	GLM Max	Google AI Ultra $200 (Antigravity)
Price	$168/mo	$200/mo
Building h/week p50 (p10–p90), peak	45 (24–90)	45 (18–90)
Building h/week p50 (p10–p90), off-peak	90 (48–180)	—
Building h/week per $/mo at p50 peak	0.27	0.23
Benchmark quality /100s	GLM-5.3 · Opencode · 54/100 planning · GLM-5.3 · Opencode · 54/100 building · GLM-5.3 · Opencode · 54/100 admin	not measured planning · not measured building · not measured admin
Source	official-clock + lived	guessed
Terminal CLI agent	Yes	Yes
Clock	peak Mon–Fri 07:00–11:00 London	limits refresh every 5h, weekly cap; no off-peak rate

GLM Max vs Google AI Ultra $200 (Antigravity), side by side