Vela

Vela 4 is here — our most capable reasoning model yet, pairing long-horizon planning with a far broader pretraining corpus.

( Products )

Reasoning in everyone’s hands

Vela

Vela is your working companion — on the web, iOS and Android. Ask it to read, plan, or reason through the hard part.

Open Vela ↗

API

Ship Vela into your own product with streaming, tool calls, structured output and long-context retrieval.

Get a key ↗

Developer docs

Install Vela in a few lines, then follow end-to-end guides for agents, evals and production rollouts.

Read the docs ↗
Chart what is still unknown
Vela Ultra

Go further with Vela. Higher rate limits, early models and priority compute — from $28 a month.

Start a plan ↗

( Blog )

Latest news

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Vela 4 Beta — the age of long-horizon agents

An early preview of Vela 4, our most capable reasoning model, pairing multi-step planning with a far broader pretraining corpus and 340k context.

Vela 4

Meridian Labs raises $4.2B Series D

We are partnering with Kestrel Global, Ninefold Partners, Arbor Grove Capital, Highfield Trust, Tessellate Ventures and Long River Equity, amongst others.

Series D

Bringing Vela to every device

Vela is now faster and sharper, with improved multilingual support across 63 languages. Available today on web, mobile and the desktop app.

Vela for all