The full text
The whole documents, one page each, exactly as they were sent.
Prompt capture
v2.1.242 system prompt
0 added and 1 removed, of 221 lines, in the prompt 17 of 27 arms receive. 3 other prompts also changed. Compared against v2.1.241.
The two arm counts on this page measure different things: 17 arms receive the prompt the headline is about, and the widest edit below reached 27, because the same changed lines sit in more than one prompt.
This arm was captured with the sandbox seeded from flags-account, this account's own GrowthBook payload, seeded into the sandbox .claude.json. 540 flags from data/flags/snapshots/flags-20260824T231321Z.json. What a seeded capture does and does not tell you.
System prompt +0 −2 of 221 lines
This edit reached all 27 arms
The same edit landed in 2 other copies of this prompt, which differ from this one only in text interpolated per model.
from line 219
# Context management When the conversation grows long, some or all of the current context is summarized; the summary, along with any remaining unsummarized context, is provided in the next context window so work can continue — you don't need to wrap up early or hand off mid-task. - -<total_tokens>15000000 tokens left</total_tokens>