Chrome
X
Reddit
LinkedIn
Claude
Cursor
Codex
ChatGPTMerlin summarizes. Long article, forty-minute video, dense PDF, and you get the gist in fifteen seconds. It also drafts emails and replies from a sidebar. For getting through a lot of material quickly it does the job.
The thing nobody mentions about summaries is how fast they stop being useful. ContextBolt keeps the source, which is the part that lasts.
A summary answers today’s question
You summarize an article about trial design because you are curious. Fine. The summary tells you the four things the author thought mattered, and you move on.
Two months later you are actually redesigning your trial. Now you need the example in paragraph nine, the caveat the author buried, and the number you wanted to quote. None of that is in the summary, and the summary is somewhere in a chat history you will not find.
ContextBolt keeps the source. One click saves the page with its article text, and AI tags go on as it lands, so searching “trial friction” returns the piece even though you could not have named it. On Pro the same library is an MCP endpoint, so your agent can pull the original and summarize it then, grounded in something you can open and check.
Merlin never collects anything
This is the bigger gap. Merlin works on what you put in front of it. It does not keep a library, and it cannot see your saves at all.
Meanwhile you hit bookmark on X forty times a month. You save Reddit threads mid-argument. You keep LinkedIn posts for their structure. All of that is real research and none of it will ever be summarized, because summarizing requires you to go and open it, which is the step that never happens.
ContextBolt captures those saves directly and puts them in one library with your web pages.
$6 against $19
Merlin has a free daily allowance and Pro at $19 a month. Most of that is model cost, because every summary is an API call somebody pays for.
ContextBolt Pro is $6 and includes no models. It gives the agent you already pay for a memory. Basic is free with no clock on it, so you can judge the capture before spending anything.
Where Merlin AI still fits
Merlin is for getting through volume. A fifteen-second summary of a long article, a video or a PDF, and an email or reply drafted from the sidebar. If reading volume is genuinely your bottleneck, that is Merlin’s job.
It is not the job this page is about. ContextBolt is not a summarizer or a chat sidebar and runs in desktop Chrome, and it is built for the part a summary throws away, the source you will need again. Running both is $25 for two problems instead of $19 for one, and Basic is free up to 150 bookmarks.
The test
Save the way you already save for a week and summarize nothing.
Then ask your agent for something specific from a source you half-remember. A summary tool has nothing to offer that question. Start free with ContextBolt Bookmarks.