Splera
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Description
Can't decide between two versions of a page? Ship both. Splera splits your traffic, measures which one converts better, and tells you when the result is real - with no test code to write. Works with any AI coding agent.
About Splera
What is Splera?
Splera is an A/B testing platform designed for developers building with AI coding agents. It automates traffic splitting, Bayesian conversion analysis, and guarded post-ship rollbacks.
What Splera does
The platform creates production-ready experiments from plain English descriptions or detected DOM changes, testing up to five variants simultaneously without manual bucketing code. It evaluates performance using a Bayesian Beta-Binomial model with 20,000 Monte Carlo samples, supporting Quick Decision, Rigorous, and Multi-armed Bandit modes with Thompson Sampling. An Ask tab enables plain-text queries grounded in live experiment numbers, while segment breakdowns reveal metrics by device, browser, OS, and screen size. When winners are shipped, Splera monitors live conversion against a frozen pre-ship baseline, triggering alerts or automatic 30-second rollbacks on Pro if performance regresses. Teams run experiments through a Chrome extension, an MCP server, or server-side with splera-node.
Who Splera is for
It is built for software engineers, product builders, and indie developers using AI coding agents such as Cursor, Claude Code, Replit, Lovable, and Bolt.
How Splera works
Users describe an experiment in plain text or let the Chrome extension detect UI changes, prompt their coding agent to wire the lightweight SDK, and observe traffic routing and Bayesian probability until a winner is declared and shipped.
Key features
- Bayesian statistics engine running Beta-Binomial models with 20,000 Monte Carlo samples
- Multi-armed Bandit mode utilizing Thompson Sampling to shift traffic toward better-performing variants
- Multi-variant experiment support testing up to five variants simultaneously
- Guarded release monitoring with baseline freezing and automated 30-second rollbacks
- Chrome extension detecting UI updates inline across Replit, Lovable, Bolt, and Claude Design
- Model Context Protocol server enabling coding agents to create, inspect, and ship experiments
Facts from splera.ai, checked 15 October 2026
Written from Splera's own website (Homepage, Pricing, Features, Docs). The maker can claim this listing to edit it.
Categories
Frequently asked questions
What is Splera?
Splera is an A/B testing platform designed for developers shipping with AI coding agents, providing Bayesian statistics, multi-variant testing, and guarded releases.
How does the stats engine evaluate variants?
The engine runs a Beta-Binomial Bayesian model with 20,000 Monte Carlo samples across all variants, supporting both increase and decrease goal metrics.
What is Multi-armed Bandit mode?
Bandit mode uses Thompson Sampling to dynamically route more traffic toward better-performing variants while keeping a 5% allocation floor per variant.
What are guarded releases?
Guarded releases freeze a winning variant pre-ship conversion baseline and monitor live traffic, sending regression alerts or executing automated rollbacks.
Which coding agents and tools integrate with Splera?
Splera integrates inline via Chrome extension with Replit, Lovable, Bolt, and Claude Design, and supports Cursor, Claude Code, and others via MCP and prompts.