Agent vs agent, spec vs spec.

Anysphere · ai-ide / Cognition · ai-ide

The two flagship AI IDEs. Cursor is a VS Code fork with the largest third-party model pool; Windsurf (now under Cognition, alongside Devin) is the ex-Codeium editor built around Cascade agent flows.

Anthropic · cli-agent / OpenAI · cli-agent

The two terminal-native agents bundled with the frontier subscriptions — Claude Pro/Max vs ChatGPT Plus/Pro. Both plan, run commands, and commit against your local checkout.

Anthropic · cli-agent / Anysphere · ai-ide

Terminal agent vs AI IDE — the two most-discussed paid setups. Claude Code runs supervised tasks from the shell; Cursor keeps the agent inside a VS Code-style editor.

GitHub · ide-extension / Anysphere · ai-ide

Extension vs fork. GitHub Copilot rides inside the IDEs you already use; Cursor asks you to switch editors for a deeper agent integration.

Community / OSS · cli-agent / Anthropic · cli-agent

The original git-native pair-programmer vs the bundled frontier CLI. Aider is open source and BYOK; Claude Code is closed, subscription-gated, and ships first-party models.

Community / OSS · ide-extension / Roo Code Inc. · ide-extension

The two best-known OSS VS Code agents. Cline is still active with BYOK + optional ClinePass; Roo Code was shut down in May 2026 and the team moved to Roomote.

Cognition · cloud-agent / Google · cloud-agent

Two cloud agents that take a ticket and return a PR. Devin runs in Cognition's sandbox with Slack/Linear bindings; Jules is Google's async issue-to-PR agent.

Zed Industries · ai-ide / Anysphere · ai-ide

Two AI-native editors with opposite tradeoffs. Zed is fast, Rust-built, and BYOK-friendly; Cursor is the VS Code fork with the deepest agent features.

Google · cli-agent / Anthropic · cli-agent

Google's open-source terminal agent vs Anthropic's. Gemini CLI's free consumer path ended in June 2026 — API key or Code Assist seats are the remaining routes.

Amazon Web Services · ai-ide / Google · ai-ide

AWS's spec-driven agent IDE vs Google's agent-first IDE. Both are new, both push a 'plan first' workflow, both gate capacity behind their parents' subscriptions.

OpenRouter · model-router / Community / OSS · model-router

Two ways to put one API in front of many models. OpenRouter is a hosted router with 500+ models; LiteLLM is self-hosted OSS you operate yourself.

Warp · cli-agent / Anthropic · cli-agent

Terminal-with-agent vs agent-in-terminal. Warp ships its own coding agent (Warp Agent/Oz) inside a GPU terminal; Claude Code drops into whatever terminal you already run.

11x · digital-employee / Artisan · digital-employee

The two best-known outbound AI SDRs. Alice (11x) pairs email/LinkedIn outbound with Julian on inbound calls; Ava (Artisan) bundles a large contact database and managed deliverability into one contract.

Sierra · digital-employee / Decagon · digital-employee

The two flagship AI customer-service employees. Sierra sells outcome-priced resolution for large consumer brands; Decagon sells agent tooling with engineering-grade controls (AOPs) for the support ops team.

Cleric · ops-agent / Resolve · ops-agent

The two dedicated AI SREs. Both watch alerts, investigate across observability stacks, and hand on-call engineers a root-cause hypothesis; Resolve leans on its Splunk/observability pedigree, Cleric on Slack-native team feedback loops.

Browser Use · computer-use / Skyvern · computer-use

The two leading open-source browser-agent frameworks. Browser Use is the larger ecosystem and DOM-first; Skyvern leans on computer vision to operate unfamiliar sites without per-site scripting.

OpenAI · computer-use / Manus · computer-use

The two hosted general agents. ChatGPT Agent runs a managed browser inside your existing ChatGPT plan; Manus runs longer cloud-sandbox tasks and returns finished artifacts like sites and decks.

OpenAI · research-agent / Google · research-agent

The two frontier deep-research modes bundled in consumer subscriptions. OpenAI's pioneered the category and reaches the API; Google's integrates with Workspace and reads your Drive.

Vapi · voice-agent / Retell AI · voice-agent

The two leading developer platforms for phone agents. Vapi maximizes stack flexibility (swap STT/LLM/TTS per call); Retell emphasizes production call quality — latency, interruptions, transfers — with both API and no-code paths.

CrewAI · agent-communication / Microsoft · agent-communication

The two leading multi-agent frameworks. CrewAI models role-based crews with a YAML/Python split and a managed console; Microsoft Agent Framework (the AutoGen + Semantic Kernel successor) pairs graph orchestration with deep Azure and .NET integration.

A2A Project · agent-communication / AGNTCY · agent-communication

Two Linux-Foundation-era agent protocols. A2A standardizes task exchange and Agent Cards between agents; AGNTCY (Cisco-originated) aims at the whole 'Internet of Agents' stack — directory, SLIM messaging, identity, observability.

Coinbase · agent-services / Google · agent-services

The two open answers to 'how does an agent pay?' x402 (Coinbase) revives HTTP 402 for instant stablecoin settlement on Base; AP2 (Google) defines signed mandates that prove authorization over existing card and payment rails.

Skyfire · agent-services / Payman · agent-services

Agent payments with two trust models. Skyfire is a network play — agent wallets plus KYA identity so services can accept payment from unknown agents. Payman is a policy play — wallets with limits and human approval so a bounded agent can't run off with the budget.