Agent Seek Eval

Snip preference and top-3 gold hit rate · frozen suite public_v1

Both published runs measure Agent Seek against same-pool You.com order: mode=snip (product default — UI and API/MCP) and mode=deep (optional richer mode; eval treatment).

Snip preference

vs same-pool You.com order · mode=snip (product default — UI and API/MCP)

74% preferred 37/50

Of 50 queries

  1. Wins3774% of 50
  2. Ties00% of 50
  3. Losses1326% of 50

Preferred on 37 of 50 queries.

Wilson 60.4–84.1%; p=0.0009

Judge gpt-5.6-sol · reasoning.effort=medium · n=50. Blinded pairwise preference vs same-pool You.com order, not top-2 sufficiency.

summary.json

Top-3 hit rate

vs locked gold answer · Agent Seek snip top-3

86% 43/50

misses 7 · errors 0 · n=50

First result that stated the answer

  1. #12967% of hits
  2. #21126% of hits
  3. #337% of hits

29 of 43 hits already stated the answer in the first result.

Wilson 73.8–93.0%; p=<0.0001

Judge gpt-5.6-sol · reasoning.effort=medium · n=50. k=3. A query hits when any successfully judged Agent Seek snip top-3 page states the locked gold answer. Queries whose page calls all fail are errors, not misses.

summary.json · results.jsonl

Of n, a win rate is that side's wins divided by judged queries, and ties count as non-wins. Excl. ties drops ties and uses decided pairs only. When a run has no ties, those two rates match. Each win rate shows a Wilson 95% CI and a two-sided exact binomial p-value for H0: p=0.5.

Diagnostics

Snip (product default) flip rate 14.0% (7/50).

Shortlists in this pass were the published URLs (titles and snippets were not stored).

Per-query

The frozen query set is balanced across an L1–L3 difficulty mix for coverage. Tier-level win rates are not published because those cells are underpowered at the current n (~15–20 per tier).

Expand a query for top-5 URLs and the judge rationale. Static only. Judge certainty is listed as deep / snip. Judge certainty is the judge's self-reported certainty on that comparison, not a statistical interval.

id tier query deep snip Judge certainty
p1-001L1
FastAPI dependency injection tutorial

Both lead with the canonical FastAPI tutorial, but B places additional official FastAPI pages on classes, Depends/Security, and sub-dependencies prominently, providing a more authoritative and comprehensive shortlist.

Agent SeekAgent Seek0.93 / 0.82
p1-002L1
Postgres JSONB GIN index documentation

B is entirely official PostgreSQL documentation and includes a JSONB-specific page with supported GIN operators and an index example. A offers broader practical coverage, but most results are secondary sources.

Agent SeekAgent Seek0.88 / 0.94
p1-003L1
RFC 9110 HTTP semantics

Both lead with the canonical RFC Editor page, but B offers more authoritative full-text alternatives near the top, including IETF Datatracker and HTTP Working Group, while A includes a references file and several secondary explainer sites.

You.com orderYou.com order0.94 / 0.93
p1-004L1
React useEffect cleanup function

Both are relevant, but A ranks the canonical React reference first and the official legacy guide second. B leads with a third-party blog and places the primary source second, making A the stronger research shortlist.

Agent SeekAgent Seek0.96 / 0.97
p1-005L1
Kubernetes liveness vs readiness probe

List B leads with two canonical Kubernetes documentation pages covering probe behavior and configuration, followed by Google’s direct comparison. List A’s first result is useful, but official Kubernetes sources are ranked lower.

You.com orderYou.com order0.96 / 0.78
p1-006L1
SQLite WAL mode concurrency

Both lead with SQLite’s canonical WAL documentation. B maintains tighter focus and adds official SQLite file-format and forum material addressing concurrent clients, snapshots, and writer blocking, while A includes more secondary blogs and discussion aggregation.

Agent SeekAgent Seek0.82 / 0.90
p1-007L1
Cloudflare Workers KV limits

Both lead with the exact canonical limits page, but A provides a stronger supporting shortlist of official, KV-specific pages covering pricing, write limits, FAQs, namespace changes, and architecture. B includes more generic, outdated, and third-party results.

Agent SeekYou.com order0.98 / 0.98
p1-008L1
OpenAPI 3.1 specification

Both lead with the canonical 3.1.0 specification, but A follows with 3.1.1 and several official OpenAPI resources. B places an off-version Swagger 3.2 page second, making it a less focused shortlist.

Agent SeekYou.com order0.90 / 0.93
p1-009L1
Python asyncio TaskGroup

Both lead with the canonical Python documentation, but A offers a stronger, more focused supporting set, including detailed tutorials, Real Python coverage, and the primary implementation issue. B ranks Reddit second and includes more general or less authoritative material.

Agent SeekAgent Seek0.92 / 0.86
p1-010L1
Redis Streams consumer groups

A leads with authoritative Redis command documentation central to consumer groups, then covers consumers, group status, pending entries, and practical guidance. B is useful, but begins with narrower Redis Insight tooling and places the canonical Streams overview third.

Agent SeekAgent Seek0.88 / 0.78
p1-011L1
GitHub Actions cache key documentation

A leads with GitHub’s canonical dependency-caching documentation and follows with the official actions/cache repository. B’s first result is relevant but third-party, while its official documentation starts at rank 2 and includes a duplicate variant.

You.com orderAgent Seek0.97 / 0.78
p1-012L1
MDN Content-Security-Policy

Both lists lead with the same authoritative MDN CSP guide and Content-Security-Policy header reference. A offers broader supporting resources, while B offers more directive-specific MDN pages; neither has a meaningful advantage for this broad query.

TieYou.com order0.96 / 0.98
p1-013L1
Docker multi-stage build best practices

A offers substantially more authoritative coverage: multiple official Docker Docs and Docker blog pages, including a dedicated best-practices guide and advanced multi-stage patterns. B starts with canonical documentation but relies mostly on third-party articles afterward.

Agent SeekAgent Seek0.93 / 0.97
p1-014L1
Prometheus histogram vs summary

A ranks Prometheus’s canonical “Histograms and summaries” comparison first, followed by official metric documentation and several directly comparative resources. B is relevant, but places the definitive official comparison fourth behind a lesser-known third-party article.

You.com orderYou.com order0.97 / 0.96
p1-015L1
TLS 1.3 handshake overview

A leads with a direct step-by-step TLS 1.3 handshake overview and places the authoritative RFC 8446 at rank 3, supplemented by Cloudflare and a readable specification. B is relevant but starts with a commercial comparison and lacks the primary standard.

Agent SeekAgent Seek0.94 / 0.98
p1-016L2
When was Next.js App Router stable

Both lead with the definitive official Next.js 13.4 announcement, but A ranks the official follow-up second and includes more directly relevant corroboration that App Router became stable in version 13.4 in May 2023.

Agent SeekAgent Seek0.90 / 0.93
p1-017L2
LangChain Deep Agents release announcement

B leads with an official LangChain Deep Agents release post and includes the canonical original Deep Agents announcement, product page, and several official version announcements. A’s earliest relevant result is an official v0.2 changelog at rank 4.

Agent SeekAgent Seek0.97 / 0.93
p1-018L2
Factory.ai Droid skills documentation

Both lead with the exact official skills documentation. B is stronger overall because it adds Factory’s official skills GitHub repository and avoids A’s third-party MCP aggregator and likely legacy Mintlify page.

You.com orderAgent Seek0.76 / 0.96
p1-019L2
Vercel Fluid compute pricing limits

Both lead with the canonical pricing page, but B is entirely official and elevates the Fluid compute limits update to rank 2. A includes a third-party pricing overview and irrelevant legacy non-Fluid pricing.

Agent SeekYou.com order0.82 / 0.90
p1-020L2
Upstash Redis REST rate limits

A leads with official Upstash pricing and limits documentation, directly addressing Redis REST service limits. B largely covers building rate limiters with Upstash rather than limits imposed on the Redis REST API.

Agent SeekAgent Seek0.97 / 0.97
p1-021L2
Neon serverless Postgres branching docs

B leads with two official Neon branching documentation pages, directly satisfying the query, followed by related official serverless and Postgres docs. A’s first result is relevant but broad, and its dedicated branching coverage is much weaker.

Agent SeekAgent Seek0.99 / 0.99
p1-022L2
Anthropic tool use JSON schema

A leads with exact, authoritative Anthropic documentation on JSON Schema compliance and tool definitions, then provides additional official implementation guidance. B is relevant but relies much more heavily on third-party guides, discussions, and tools.

Agent SeekAgent Seek0.99 / 0.99
p1-023L2
OpenAI structured outputs JSON schema

A leads with OpenAI’s canonical Structured Outputs documentation, followed by the official announcement and another official docs host. B is also strong, but prioritizes a cookbook example over the primary API guide and shifts sooner to third-party guides.

You.com orderAgent Seek0.90 / 0.78
p1-024L2
MCP streamable HTTP transport

A leads with current official MCP transport documentation and a dedicated official Streamable HTTP specification, followed by strong implementation docs. B is relevant, but its official result is older and less specifically focused.

Agent SeekAgent Seek0.96 / 0.94
p1-025L2
OAuth 2.1 authorization code PKCE

A better covers the full OAuth 2.1 context and includes primary standards sources: the IETF OAuth 2.1 draft and RFC 7636. B is useful for implementation guidance but relies more heavily on vendor and secondary explanations.

Agent SeekAgent Seek0.88 / 0.78
p1-026L2
Cloudflare R2 egress pricing

B ranks Cloudflare’s canonical R2 pricing documentation first and also includes the official product page. A is relevant but leads with a calculator and does not surface the authoritative pricing page.

You.com orderAgent Seek0.99 / 0.98
p1-027L2
Exe.dev persistent Linux VMs

B places the exact persistence article first, but A offers a substantially stronger authoritative shortlist overall: the official overview, homepage, core docs, persistence-specific documentation, and related first-party explanations, with fewer aggregators or tangential projects

Agent SeekAgent Seek0.78 / 0.96
p1-028L2
Cursor Background Agents documentation

Both lead with relevant official material, but B concentrates four authoritative Cursor documentation pages at the top, including the Cloud Agents API, general explanation, and current Cloud Agents docs. A introduces a third-party changelog at rank 3.

Agent SeekYou.com order0.72 / 0.86
p1-029L2
Temporal workflow vs activity

B leads with official Temporal documentation for Activities, then provides official platform and Workflow pages, enabling an authoritative comparison. A’s exact-title forum result is relevant but narrower and less canonical.

Agent SeekAgent Seek0.90 / 0.86
p1-030L2
ClickHouse ReplacingMergeTree caveats

B leads with canonical ClickHouse guidance and the official engine reference, followed by reputable Altinity material. A is more explicitly caveat-focused, but ranks a less authoritative third-party article above primary documentation and includes several SEO-style sources.

You.com orderAgent Seek0.74 / 0.93
p1-031L2
Pydantic v2 model_validate vs parse_obj

Both lead with the authoritative migration guide, but B places a directly focused model_validate-versus-parse_obj behavior issue second and includes another relevant issue at rank 6. A’s comparable issue is buried at rank 8.

You.com orderAgent Seek0.84 / 0.96
p1-032L2
HTTP 103 Early Hints browser support

B is more focused on browser support, combining primary Chromium documentation, Chrome’s developer guidance and feature status, MDN compatibility information, and Firefox source documentation. A includes more server/vendor and implementation-oriented pages.

Agent SeekYou.com order0.97 / 0.94
p1-033L2
WebAuthn discoverable credentials passkeys

Both are highly relevant, but A ranks authoritative, directly applicable sources first, including Yubico guidance, the canonical W3C WebAuthn specification, and Yubico’s developer guide. B delays comparable authority and includes a narrow GitHub issue and personal blog.

Agent SeekAgent Seek0.95 / 0.94
p1-034L2
S3 conditional writes If-None-Match

A leads with the authoritative PutObject API reference explicitly defining If-None-Match behavior, followed by AWS guidance and enforcement documentation. B is relevant but places a Medium article above several stronger official sources.

Agent SeekAgent Seek0.95 / 0.84
p1-035L2
Postgres LISTEN NOTIFY connection pooling pitfalls

Both lead with the directly relevant PgBouncer issue, but A adds several focused discussions of LISTEN/NOTIFY’s session-bound behavior, dedicated connections, scaling, and pooling workarounds. B offers only the single issue.

You.com orderYou.com order0.98 / 0.98
p1-036L3
Who created Redis

B leads with authoritative Redis-hosted pages that directly identify Salvatore Sanfilippo as Redis’s creator. A also answers correctly, but places less authoritative Wikipedia results ahead of the primary-source Redis pages.

Agent SeekAgent Seek0.95 / 0.95
p1-037L3
Original paper introducing the Transformer attention architecture

A leads with Google Research’s official paper page, followed by an official explanatory post and arXiv. B starts with Wikipedia and places primary sources lower. Both contain the paper, but A is substantially better ranked.

Agent SeekYou.com order0.98 / 0.98
p1-038L3
Official X/Twitter profile for OpenAI

Both lists place the exact official OpenAI X profile first and its legacy Twitter URL second. Later differences add little value for this straightforward navigational query.

TieAgent Seek0.98 / 0.76
p1-039L3
NASA Instagram on the official Instagram host

Both rank the exact official Instagram profile first. B is stronger overall because it immediately adds NASA’s own announcement and official social-media directory, plus other official Instagram accounts; A includes redundant profile variants and unrelated secondary pages.

You.com orderAgent Seek0.93 / 0.78
p1-040L3
GitHub user torvalds

List B places the exact canonical GitHub user profile first. List A starts with the profile’s repositories tab, which is relevant but less directly answers the user-profile query.

You.com orderYou.com order0.99 / 0.72
p1-041L3
Wikipedia English: Transformer (machine learning model) vs SEO blog summaries of Attention Is All You Need

B places the sought English Wikipedia transformer article at ranks 2–3 and prioritizes authoritative Google and primary-paper sources. A delays the exact article until rank 9, behind Simple Wikipedia, a mirror, and multiple blog summaries.

Agent SeekAgent Seek0.98 / 0.99
p1-042L3
Apple Vision Pro US release date

B puts Apple’s authoritative announcement first, directly stating the February 2 U.S. release date, then follows with relevant reporting. A starts with a less authoritative Wikipedia result whose snippet does not clearly answer the query.

Agent SeekAgent Seek0.98 / 0.96
p1-043L3
Difference between LangGraph and LangChain agents

Both lists are highly relevant, but A ranks LangChain’s authoritative first-party comparison first. B begins with third-party articles and does not surface official LangChain Academy, blog, and documentation resources until ranks 3, 6, and 8.

You.com orderAgent Seek0.96 / 0.98
p1-044L3
Official Solidity language documentation

A leads with official documentation and is dominated by canonical docs.soliditylang.org pages. B starts with a GitHub fork and includes several secondary sources, while current official documentation appears only at rank 4.

Agent SeekAgent Seek0.99 / 0.99
p1-045L3
Cloudflare Workers vs Cloudflare Pages Functions

B prioritizes authoritative Cloudflare documentation and official blog posts explaining Pages Functions, the recommendation to start new projects with Workers, and platform convergence. A has useful comparisons, but leads with Reddit and community discussions.

Agent SeekAgent Seek0.94 / 0.87
p1-046L3
What is prompt injection? defensive overview for LLM applications

List B leads with OWASP’s authoritative prevention cheat sheet, includes OWASP’s canonical vulnerability overview, and offers several directly relevant defensive guides. List A is authoritative but much less comprehensive for the requested defensive overview.

You.com orderYou.com order0.98 / 0.94
p1-047L3
PyTorch 2.0 release date

Both lead with the canonical PyTorch 2.0 announcement, but A follows it with the official versions wiki and places the exact March 15, 2023 answer higher. Its remaining results are also more consistently focused on the 2.0 release.

Agent SeekAgent Seek0.78 / 0.82
p1-048L3
Who maintains the ripgrep project

A’s first result directly states that ripgrep is primarily maintained by Andrew Gallant, with the canonical GitHub repository second. B has strong primary sources but does not surface the maintenance answer as directly until result 3.

You.com orderAgent Seek0.97 / 0.90
p1-049L3
Official Kubernetes security announcements / CVE channel vs random aggregators

A is consistently authoritative and Kubernetes-hosted, placing the official CVE feed, machine-readable feed, and security announcement channel in its top four. B starts well but mixes in third-party monitoring and CVE aggregators ahead of the official announcement channel.

Agent SeekAgent Seek0.97 / 0.99
p1-050L3
Stripe Tax vs Stripe Tax Calculations API distinction

B leads with Stripe’s canonical standalone Tax Calculations/Transactions API guide, then pairs it with general Stripe Tax and pricing documentation, making the product-versus-API distinction easier to research. A’s clearest comparison-oriented result appears later.

You.com orderAgent Seek0.82 / 0.90

Static published numbers. This page does not call OpenAI, You.com, or TypeSafe.