Who is harness-arena for?

harness-arena is an open-source project built for AI agent developers.

Does harness-arena have a free plan?

Yes — harness-arena is open source under the Apache-2.0 license and free to use.

What platforms does harness-arena run on?

harness-arena runs on the command line. It can also be self-hosted.

Is harness-arena still maintained?

Unverified. harness-arena has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to harness-arena?

Similar projects tracked by PulseGate include harnessgym, harness-bench-fast, and everyharness.

Back to the index

harness-arena

PyPIInfrastructure

harness-arena is an Apache-2.0 Python package for benchmarking agent harnesses against a single model using Terminal-Bench 2. It is intended for developers evaluating and comparing agent systems.

Open SourceApache-2.0CLISelf-hosted

Visit PyPI

Overview

4 features

harness-arena sits in PulseGate's LLM eval & observability category. It focuses on comparing agent harness performance consistently against a shared model and benchmark. harness-arena is an open-source project aimed at AI agent developers. harness-arena is open source under the Apache-2.0 license. harness-arena is available on the command line, and it can be self-hosted.

harness-arena first shipped in 2026. Key capabilities include agent benchmarking, model evaluation, and terminal-Bench support.

Summary written by a language model from the project’s public pages.

Agent benchmarking
Model evaluation
Terminal-Bench support
Harness comparison

Built with & integrations

Runs on

CLISelf-hosted

Trust & compliance

License

Apache-2.0

Verified signals

HTTPSOpen SourceFree tier

Indexing history

What PulseGate has recorded for this listing

Indexed13 Aug · 05:39 UTC
harness-arena verified against its public source
Source: PulseGate · Open

Frequently asked questions about harness-arena

What is harness-arena?: Harness-arena focuses on comparing agent harness performance consistently against a shared model and benchmark. It is catalogued under LLM eval & observability on PulseGate.
Who is harness-arena for?: harness-arena is an open-source project built for AI agent developers.
Does harness-arena have a free plan?: Yes — harness-arena is open source under the Apache-2.0 license and free to use.
What platforms does harness-arena run on?: harness-arena runs on the command line. It can also be self-hosted.
Is harness-arena still maintained?: Unverified. harness-arena has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to harness-arena?: Similar projects tracked by PulseGate include harnessgym, harness-bench-fast, and everyharness.harnessgym harness-bench-fast everyharness
When did harness-arena launch?: harness-arena first shipped in 2026.
Is harness-arena open source?: Yes — harness-arena is open source under the Apache-2.0 license.

At a glance

Platforms: CLI
Languages: English
License: Apache-2.0
First seen: 13 Aug 2026
Built for: AI agent developers
Model: Open source
Solves: Comparing agent harness performance consistently against a shared model and benchmark.

Registered as

PyPI: harness-arena

Developer

Danaugust

Index record

Indexed: 13 Aug 2026
Lifecycle: Alive
First seen: Aug 2026
Last seen: 13 Aug 2026

Identity audit (13)

Slug: harness-arena-pypi-org
Lifecycle state recorded: 13 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 Aug 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model from page content.
Last updated: 13 Aug 2026
Canonical URL: https://pypi.org/project/harness-arena

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do