There are few things worth mentioning, can't pick only one:

1. The coverage of the agents

Our primary use case was competitive intelligence and win/loss, but seeing how the insights naturally cascaded into other use cases, like ICP analysis and messaging, completely changed the way the PMM team works and how quickly we are able to deliver things for other teams. So now we use all 9 agents, and for the first time, I feel as a PMM leader that we are on top of things.

2. Calven MCP

It took people a few weeks to get used to the fact that they no longer have to reach out to the PMM team with one-off requests and can do it themselves in Claude using the Calven MCP, but now it has become the norm across the whole company. We are not the bottleneck anymore, and people actually love the fact that they can build pretty much anything they need using the Claude + Calven MCP combo (custom pitch decks, one-pagers, competitive deal prep, etc.).

3. Slack Agent

The CI agent completely took over our #competitors channel, and people are loving it. It processes all the insights the field team shares in the channel and instantly answers any questions people have.

4. Zero maintenance

We were trying to build our own agents in Claude Code before, but it was just too time-consuming, the quality was not ideal, and the API bill actually started to climb quickly. With Calven, our maintenance time dropped to zero, the quality is simply incomparable, and the cost is actually the same as what we paid for Anthropic API usage. Review collected by and hosted on G2.com.

The only feature we were missing was implemented in a week; otherwise, there were no limitations. Review collected by and hosted on G2.com.