Bob The Builder vs Vanilla

Name: Bob The Builder vs Vanilla OpenChainBench measurements
Creator: OpenChainBench
License: https://creativecommons.org/licenses/by/4.0/

Vanilla leads on the only live benchmark. Vanilla wins on Ethereum block builder market share (8.68% vs 0.45%).

Read methodology Last measured Mon, 31 Aug 2026 06:47:34 UTCWindow: rolling 24h1 shared benchmark

Bob The Builder

Pseudonymous Ethereum block builder, self-labeled `bob-the-builder` in block extraData with the bob-the-builder.eth fee recipient. No operating entity is publicly identified; identity rests on the extraData self-label.

Vanilla

Not a company: blocks whose extraData is empty or carries an execution client's default tag (geth, reth, nethermind, besu, erigon), meaning the proposer built the block locally instead of outsourcing to a MEV-Boost builder. The live measure of how much of Ethereum still self-builds.

Side by side measurements

Ethereum block builder market share

Trading

Bob The Builder

Trails

0.45 %

rank: #8
samples: 32provisional

Vanilla

Leads

8.68 %

p99: 8.68%
rank: #5
samples: 623

Attribution relies on the extraData tag each builder voluntarily stamps. A builder can change or strip its tag; unrecognized tags land in Other and raw strings are logged so the table grows. The Vanilla row (locally built) could be marginally overstated if a builder uses a client-default tag; the relay cross-check surfaces this. High share is a centralization datapoint, not a quality ranking.

Frequently asked questions

Bob The Builder vs Vanilla: which one is better?

Bob The Builder and Vanilla are compared on 1 shared OpenChainBench benchmarks. Vanilla leads on Ethereum block builder market share. See the live table on this page for every metric.

Which is more reliable, Bob The Builder or Vanilla?

On the Ethereum block builder market share benchmark, Vanilla leads at 8.68% versus Bob The Builder at 0.45% (provisional). Live measurement is updated continuously by the OpenChainBench harness.

How is the Bob The Builder vs Vanilla comparison measured?

Every benchmark on this page uses the same open methodology, published at https://openchainbench.com/methodology. Data is CC-BY-4.0. Measurement harnesses are MIT-licensed.

How this pair was selected

Auto-generated pairs require: both providers in the same benchmark for seven consecutive days, at least 1000 samples per provider, observable third-party search demand, and a public /products/[slug] page on OCB. Editorially curated pairs (like this one) may publish early when search demand is high and data is accruing — panels with fewer than 100 samples are shown as provisional. The full pair ledger is versioned in the public repo.