12 Best Cosine Alternatives (2026)
Cosine is ai software-engineering agent available as a cli, a cloud web workspace and a desktop app, running cosine's own lumen coding models or third-party frontier models.. Teams that switch usually cite published usage limits instead of an unpublished allowance, an open-source agent you can run with your own API key, a no-training policy, SSO and a self-hosted option for company code. The alternatives below are ranked by published head-to-head verdicts, not sponsorship.
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Reviewed by vsref Editorialfacts verified Oct 3, 2026Methodology →
Where to switch, by reason
Switching because of published usage limits instead of an unpublished allowance →see Command Code
Switching because of an open-source agent you can run with your own API key →see DeepSeek Harness (dsh)
Switching because of a no-training policy, SSO and a self-hosted option for company code →see GitLab Duo Agent Platform
Switching because of free plans →see Amp
Switching because of terminal workflows →see Cline
Switching because of vs code →see Factory
Autonomous cloud coding agent + terminal agent (Devin CLI); plans shared with Devin Desktopvs Cosine: adds zero data retention option.Best if you need: enterprise, free plans, terminal workflows
See pricingvs Cosine →Try Devin →
Original git-native terminal pair programmer; BYO key only, no paid tier; publishes its own polyglot LLM leaderboard (also oss_self_hosted)vs Cosine: adds runs local models.
See pricingWebsite →
Legacy AWS coding assistant in end-of-sale; superseded by Kirovs Cosine: no pick the model per task.
See pricingTry Amazon Q Developer →
Frontier multi-model agent + cloud dev environments (orbs); also terminal_agent (Amp CLI, connects to VS Code/Cursor/Windsurf/Zed/Neovim). OWNERSHIP: no longer branded as Sourcegraph - operated by "Amp Frontier Corporation" (privacy policy, modified Sep 10, 2026); about page: "We are an independent agent research lab"; CLI npm package moved from @sourcegraph/amp to @ampcode/cli (May 14, 2026 changelog). Free Hobby tier with BYOK/ChatGPT-sub since Sep 13, 2026.vs Cosine: adds zero data retention option.
See pricingVisit Amp →
Context-engine coding platform for large codebases; now led by Cosmos cloud agents + Auggie CLI (also ide_extension: VS Code, JetBrains, Vim/Neovim chat). Brief seeded it as an IDE extension; the 2026 pricing page leads with "Try Cosmos". Flat team pricing (up to 50 seats, no per-seat charge) with a pooled $ usage balance.vs Cosine: adds opens prs from issues.
See pricingVisit Augment Code →
Terminal-first coding agent included in Claude Pro/Max/Team/Enterprise plans or billed via API; also IDE extension, desktop app and cloud sessions (cloud_agent).vs Cosine: adds zero data retention option.
See pricingVisit Claude Code →
BYO-key OSS agent; free for individuals, pay only for inference; Plan/Act modes; also CLI, desktop app, SDK (also oss_self_hosted)vs Cosine: adds runs local models.
See pricingVisit Cline →
Coding agent for open models (DeepSeek, Kimi, GLM, Qwen, MiniMax) with taste learning; CLI + desktop + ACP for Zed; cheap $1-$20 plans with published $ rolling windows.vs Cosine: adds runs local models.
See pricingVisit Command Code →
Discontinued: acquired by Cursor (June 2026); final v2.x release; code remains availablevs Cosine: no pick the model per task.
See pricingVisit Continue →
Source-available (FSL, converts to MIT after 2 years) BYO-model terminal agent; optional Charm-hosted 'Hyper' inference subscription.vs Cosine: adds runs local models.
See pricingVisit Crush →
AI IDE with CLI and cloud agents; ships its own Grok/Composer models. Acquired by SpaceX (completed 2026-08-14, per cursor.com/blog/joining-spacex); also segments terminal_agent, cloud_agent.vs Cosine: adds zero data retention option.
See pricingVisit Cursor →
'Everything is a Plugin' (Cordis) agent harness from DeepSeek; developer preview with breaking changes; general-purpose, not coding-onlyvs Cosine: no pick the model per task.
See pricingVisit DeepSeek Harness (dsh) →
All 43 ai coding agents alternatives
Agentic AI IDE (ex-Windsurf) inside the Devin family; shares plans with Devin Cloud and Devin CLIvs Cosine: adds zero data retention option.
See pricingVisit Devin Desktop (formerly Windsurf) →
Agent-native dev platform; Droids work locally or as background/cloud agents. Secondary segment: terminal_agent (Droid CLI). Domain moved from factory.ai to factory.com (factory.ai 307-redirects).vs Cosine: adds runs local models.
See pricingVisit Factory →
Ad-funded free coding agent on curated low-cost models. History: launched as Codebuff (YC); repo and operator (Freebuff, Inc., legal docs effective 2026-09-02) now present Freebuff, built on the Codebuff open multi-agent framework; codebuff.com still sells the premium-model Codebuff CLI ($100-$500/mo). Also desktop, web builder, cloud IDE.vs Cosine: no self-hosted / vpc deployment.
See pricingVisit Freebuff →
Open-source terminal agent (also oss_self_hosted), enterprise/API-key only after consumer users moved to Antigravity CLIvs Cosine: adds opens prs from issues.
See pricingVisit Gemini CLI →
Multi-model IDE extension plus Copilot cloud agent (formerly 'coding agent'; cloud_agent) and Copilot CLI (terminal_agent). Billing moved from premium requests to GitHub AI Credits on 2026-06-01.vs Cosine: adds runs local models.
See pricingVisit GitHub Copilot →
DevSecOps-native agents and flows for GitLab Premium/Ultimate; also IDE extensions (VS Code, JetBrains) and a Duo CLI; self-managed and air-gapped self-hosted-model options.vs Cosine: adds runs local models.
See pricingVisit GitLab Duo Agent Platform →
Agent-first IDE + CLI + desktop agent manager; Google's consumer coding product since Gemini CLI's 2026-06-18 consumer cutovervs Cosine: adds runs local models.
See pricingVisit Google Antigravity →
Local, BYO-model general-purpose agent; also a native desktop app (Rust). Donated by Block to the Linux Foundation's Agentic AI Foundation in 2026.vs Cosine: adds runs local models.
See pricingVisit Goose →
MIT local-first terminal agent; also web UI, desktop app, REST server, MCP/ACP; persistent autonomous-agent template.vs Cosine: adds runs local models.
See pricingVisit gptme →
Subscription-bundled vendor terminal agent (SuperGrok / X Premium+), open-sourced Apache-2.0; also embeds in editors via ACPvs Cosine: adds runs local models.
See pricingVisit Grok Build →
Async GitHub cloud agent bundled with Google AI Pro/Ultra; changelog quiet since March 2026vs Cosine: adds opens prs from issues.
See pricingVisit Jules (Google) →
JetBrains IDE agent, now also a terminal agent (Junie CLI) and runs in JetBrains Air; metered in JetBrains AI Credits ($1 each) with BYOK at provider rates, zero markup.vs Cosine: adds runs local models.
See pricingVisit JetBrains Junie →
OSS multi-surface agent; zero-markup inference gateway + Kilo Pass credit bundles; started as a Roo Code fork, now built on the OpenCode core (also terminal_agent, cloud_agent)vs Cosine: adds runs local models.
See pricingVisit Kilo Code →
Open-weight model vendor's agent, included with Kimi membership; MIT CLI also takes other providersvs Cosine: no self-hosted / vpc deployment.
See pricingVisit Kimi Code →
Spec-driven AI IDE + CLI (ex-Q Developer CLI) + web/cloud agent; AWS successor to Amazon Q Developervs Cosine: adds opens prs from issues.
See pricingVisit Kiro →
Persistent-memory coding agent (Apache-2.0); CLI + desktop + browser + Slack/Telegram/Discord channels; optional Letta Cloud ($20/mo Pro).vs Cosine: adds runs local models.
See pricingVisit Letta Code →
European vendor agent with open-weight local models and self-hosting; also IDE extension and cloud_agent (remote agents, teleport)vs Cosine: adds runs local models.
See pricingVisit Mistral Vibe →
Coding agent across CLI (Apache-2.0), IDE extension, Codex Cloud (cloud_agent) and ChatGPT desktop app; usage shared with ChatGPT Work. The standalone Codex app merged into the ChatGPT desktop app on 2026-07-09.vs Cosine: adds runs local models.
See pricingVisit OpenAI Codex →
Most-starred OSS coding agent; provider-agnostic TUI with build/plan agents; optional pay-as-you-go Zen gateway and $10/$40 Go subscriptions (also oss_self_hosted)vs Cosine: adds runs local models.
See pricingVisit OpenCode →
MIT-licensed, model-agnostic agent platform; self-host or use OpenHands Cloud (free individual SaaS, enterprise VPC). Also a cloud/async agent.vs Cosine: adds runs local models.
See pricingVisit OpenHands →
Minimal-by-design harness: no built-in subagents, plan mode or permission popups; extend via packages, skills and SDKvs Cosine: adds runs local models.
See pricingVisit Pi →
Discontinued: Plandex Cloud wound down from 2025-10-03; no commits or releases since.vs Cosine: no pick the model per task.
See pricingVisit Plandex →
Open-source multi-provider agent from an open-weight model lab; also desktop app, web UI and VS Code/JetBrains/Zed pluginsvs Cosine: adds runs local models.
See pricingVisit Qwen Code →
Discontinued 2026-05-15; team pivoted to Roomote (cloud agent). Community fork ZooCode; Kilo Code started as a Roo forkvs Cosine: no pick the model per task.
See pricingVisit Roo Code →
Self-hosted completion server + IDE plugins; low activity in 2026 (chat/knowledge features sunset Jan 2026, vendor focus shifted to its Pochi agent).vs Cosine: adds runs local models.
See pricingVisit Tabby →
Private, governed enterprise coding agent with self-hosted and air-gapped deployment. Now a Tricentis product (acquired 2026-07-30). Secondary segment: terminal_agent (Tabnine Plugin for OpenCode).vs Cosine: adds runs local models.
See pricingVisit Tabnine →
Low-priced AI IDE (Free/Lite/Pro/Pro+/Ultra); product family now split into TraeCode (IDE) and TraeWork (web/desktop/mobile workspace built on SOLO). Owner per brief: ByteDance - the legal entity could not be read from a primary source (privacy policy/ToS are client-rendered); enterprise page cites Douyin as a customer. Chats may be used for training unless Privacy Mode is on.vs Cosine: adds zero data retention option.
See pricingVisit Trae →
Plan-Code-Verify multi-model agent; desktop app (primary, most changelog activity), VS Code/JetBrains plugins, Slack/Telegram control; increasingly pitched as an 'AI technical cofounder' with app deployment.vs Cosine: adds zero data retention option.
See pricingVisit Verdent →
Discontinued OSS Cursor alternative; repo archived 2026-06-02.vs Cosine: no pick the model per task.
See pricingVisit Void →
Agentic terminal / ADE with credit-metered agents and cloud agent orchestration ("Warp Factories"). Secondary segment: cloud_agent. Client source available under AGPL-3.0.vs Cosine: adds zero data retention option.
See pricingVisit Warp →
Fast OSS editor with agentic features; free with your own keys or external agents, Pro $10/mo adds $5 of hosted-model tokens at list +10%. Also oss_self_hosted-adjacent (GPL editor, local models).vs Cosine: adds runs local models.
See pricingVisit Zed →
How the top Cosine alternatives compare
Beyond the ranked cards: how the top 6 Cosine alternatives place in the AI coding agents field, where each one wins in our published verdicts, and what Cosine still holds over it.
1. Devin
In our published verdicts, Devin beats Cosine for enterprise, free plans and terminal workflows and matches it for local models and open source.
The reverse angle matters too - Cosine vs Devin: no zero data retention option.
Why teams switch: Devin has the stronger compliance record, with a caveat on training: its self-serve plans may train on code by default, and Cosine publishes no training policy at all. Both offer self-hosted deployment. Devin's SSO is spelled out for Enterprise with Okta, Entra ID, SAML, OIDC and SCIM, while Cosine's SSO is vendor claimed. Devin offers a zero data retention option, which Cosine does not publish, and Devin has SOC 2 while Cosine states it does not. Both list admin audit logs.
Enterprise verdict →
Overall verdict: Devin leads three use cases to two, with two ties. It wins Enterprise with SOC 2, a zero data retention option and SSO through Okta, Entra ID, SAML, OIDC and SCIM, though its self-serve plans may train by default. It wins Free Plans because it publishes limited free usage, and Terminal Workflows on the breadth of its surfaces, including a CLI that runs inside JetBrains IDEs. Cosine wins Beginners and VS Code on price and safety, at $19/mo with 4M credits and checkpoints. Local Models and Open Source are ties, since neither publishes the deciding facts.
3. Amazon Q Developer
Seen from the other side, Cosine vs Amazon Q Developer: adds pick the model per task.
5. Augment Code
Seen from the other side, Cosine vs Augment Code: no opens prs from issues.
6. Claude Code
Before switching, weigh what stays behind - Cosine vs Claude Code: no zero data retention option.