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Arena

Backtests and paper-trades rule-based forecasts on settled and live prediction-market games, reporting edge as an interval.

FinanceCLIAPIEvaluation
arena-predictions.com ↗
At a glanceswept 2026-10-12

145 installs/mo

Established

For
Traders and small teams testing prediction market rules before risking real money.
Price
From $9.99/mopricing page, read 2026-10-13 ↗
Activity
Actively maintainedrelease 2 weeks ago · site updated 3 days ago
Company
ZBGC LLC · Domain since 2026privacy policy · domain registered
Runs as
CLIAPI
AlternativesSet it up for my teamIs Arena yours? Claim the card →
What people do with itread off arena-predictions.com on 2026-10-13
  • backtest a rule against prediction markets that have already settled
  • paper trade picks at live prices before committing money
  • review how each forecast was scored after its market settles
The companyeach fact with its source · read 2026-10-13
Your datawhat they publish, each line with its page · read 2026-10-13

“We do not train AI models on your trading data.”

security page ↗

These are Arena's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read 2026-10-13

MCP server details →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Financeby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

All Finance tools →

Questions this page answers
  • What is Arena?

    Backtests and paper-trades rule-based forecasts on settled and live prediction-market games, reporting edge as an interval. It is listed in the Atlas under Finance and made by ZBGC LLC.

  • Who is Arena for?

    Traders and small teams testing prediction market rules before risking real money.

  • How much does Arena cost?

    Paid plans start at $9.99/mo, per Arena's pricing page on 2026-10-13.

  • Is Arena free?

    No. Its pricing page showed no free plan on 2026-10-13.

  • Do people use Arena?

    Established: 145 installs/mo (pypi).

  • Is Arena still maintained?

    Actively maintained: release 2 weeks ago · site updated 3 days ago.

  • Who owns Arena?

    Arena is run by ZBGC LLC, per its privacy policy (2026-10-13).

  • Does Arena train AI on your data?

    No, per its security page (2026-10-13): “We do not train AI models on your trading data.”

  • Is Arena safe?

    We do not audit vendors. What Arena publishes, read 2026-10-13: GDPR stated on its privacy policy; on training with your data, “We do not train AI models on your trading data.”.

  • What are alternatives to Arena?

    In Finance, by use: Nydar, Your Daily Bread, WallStreetClaws, WhaleRider, Strategic Markets, The Floor.

Not quite it? Describe the job

beta

Five tools from the Atlas that fit it, each judged against what you wrote.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.