News from people who run the tools.

HarnessUp Portal covers AI coding agents, large language models and developer tooling. It is written by the team that builds HarnessUp, a local toolkit that cuts token waste in Claude Code and Codex.

What we cover

Model and agent releases, pricing and limit changes, benchmarks we run ourselves, security issues in AI tooling, and practical analysis for developers who pay for tokens. We publish when we have something to add: a test, a number, a primary source, or experience from running the tool.

Who publishes it

HarnessUp Portal is published by MAV3 COMERCIO DIGITAL LTDA (CNPJ 53.635.043/0001-00), Av. Brig. Faria Lima 1572, Conj 352, Sala 1022, Jardim Paulistano, São Paulo - SP, 01451-917, Brazil.

Our conflict of interest, stated up front

We sell a developer tool, so we have a stake in this market. Read how we keep coverage honest in our editorial and AI policy. Meet the authors, or contact the newsroom.