MCP Atlas A

Name: MCP Atlas
Creator: Scale AI
Keywords: Coding,Computer Use,Enterprise Workflows,Long-Horizon

AI benchmark · Coding

Publisher: Scale AI
Domains: Coding Computer Use Enterprise Workflows Long-Horizon
On X: @scale_ai ↗
Tier: A why
Snapshot: October 11, 2026

Open benchmark ↗labs.scale.com/papers

Full listing name: MCP Atlas (2025-12-18; HF ScaleAI/MCP-Atlas; GitHub scaleapi/mcp-atlas)

Latest from Scale AI on X

@scale_ai ↗

Every RL environment we build runs on AgentEnv. Today we’re open-sourcing it, so more people can build the worlds agents learn in.
— scale_ai (@scale_ai) Oct 6, 2026
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What is MCP Atlas?

MCP Atlas measures language models' tool-use competency on tasks run against real Model Context Protocol (MCP) servers.

General capability mostly
“MCP-Atlas: A Large-Scale Benchmark for Tool-Use Competency with Real MCP Servers”
labs.scale.com/papers ↗

Tier A

Widely used: a lab reports it, or 50 or more models are scored on it.

How much stands behind a tier: usage, who backs it, a confirmed line from its own site or paper, and a clear read on X. High with three of the four, medium with two, low otherwise.

50 models scored
built by Scale AI
in curated RL directories (4 pts)

On X · well regarded, low buzz, from 6 posts about MCP Atlas in the last month

MCP Atlas was accepted to NeurIPS 2026 and is noted as widely cited in frontier model scorecards; one reply suggests separating tool-discovery from tool-execution failures.

@m_newhaus ↗ · @RazvanDuu ↗ · @Bckenstler ↗

How we got to tier A

Adoption: 50 models scored; built by Scale AI. Tier A.
On X: well regarded, low buzz. “MCP Atlas was accepted to NeurIPS 2026 and is noted as widely cited in frontier model scorecards; one reply suggests separating tool-discovery from tool-execution failures.” No move.
In curated RL directories: 4 points, a floor of B.
Confirmed: a line from its own site or paper places it.

A clear view on X moves a tier one step up or down; most entries don't move. How tiers work.

Where MCP Atlas sits

Its realm in the universe, live. Hover a star for its name; click to open it. Open it in the universe

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More Coding AI benchmarks

Coding RL environments

Next: browse all benchmarks. Entry from the RL Research daily scrape of public sources, 2026-10-11 snapshot.