Cosine

Cosine is an artificial intelligence platform that trains specialised coding agents for software teams.

Cosine trains AI models and specialised coding agents for organisations that need frontier capability within secure environments. The platform focuses entirely on writing exceptional software rather than acting as a generalist model. It handles complex architectures, legacy infrastructure, and long-lived codebases across mainstream and niche languages. Users can work within a terminal-native interface or collaborate in the cloud on shared projects. Deployment options include public cloud, managed single-tenant cloud, and fully air-gapped environments.

Cosine at a glance

Best for: Software engineer
Runs on: Web, CLI, self-hosted
Pricing: Starter plan 4M credits/month; Team plan 47M credits/month; Enterprise plan 240M credits/month
Released: October 2023
Category: AI coding tool
Website: cosine.sh

Key features

Terminal-native interface
Multi-agent orchestration
Support for COBOL, Fortran, Verilog, Rust, and SQL
Parallel coding task execution
Local-to-remote execution model
Public cloud and air-gapped deployments

Use it for

Shipping production-quality software code
Reasoning across complex and legacy architectures
Collaborating on large changes across teams

Alternatives to Cosine

aiXcoder — Provides full-stack private deployment for secure, enterprise-wide code generation.
Cohere — Private, secure enterprise AI deployment with customizable models.
Coucou — It provides open-source, real-time agent monitoring and approvals directly from the screen notch.
Stagewise — Maintain full sovereignty over AI models while running agents in parallel.
Cognicore — Persists agent context across tools, sessions, and terminals.
OpenCode — Works with 75+ model providers, local models, and existing subscriptions
Coder — Provides full security, audit logging, and compliance for AI development.
OpenClaude — Connects one terminal interface to over 200 different AI models.
Qoder — It features deep codebase awareness, autonomous coding agents, and cross-platform support.
Acyclic — Runs large tasks by splitting work across many parallel agents.
Snippet Service — It runs locally, keeps sessions on disk, and provides a companion app for remote steering.
cc-sdd — Explicit boundaries and independent review let humans and agents work in parallel safely.

All Cosine alternatives