Serper alternatives
The highest-scoring alternative to Serper is Exa at 92/100 on the AgentReady, against 56/100 for Serper.
All scored in Web Search & Research.
What Exa does that Serper does not
Exa passes clear canonical domain, public docs discoverable, llms.txt published, llms-full.txt / full agent docs, machine-readable metadata, structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, programmatic credential creation, fast time to first request, copyable quickstart, official python sdk, cli available, machine-readable errors, and Serper fails them. That is the whole of the gap between the two scores, so if none of those matter to your agent the ranking above overstates the difference.
Why people look for an alternative
Serper fails clear canonical domain, public docs discoverable, llms.txt published, llms-full.txt / full agent docs, machine-readable metadata, structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, official python sdk, cli available, machine-readable errors, retry behavior documented, idempotency support. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
What this category actually supports
Across the 14 products scored in Web Search & Research, search the web is offered by 93%, research a topic is offered by 64%, find news is offered by 14%. Anything under half is a gap you should expect to fill yourself whichever one you pick.
An agent can get this list directly: resolve("alternative to Serper") over the MCP server, or GET /v1/categories/web-search.