Alternatives
10 best Freestyle alternatives
Tools that cover the same task as Freestyle (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Freestyle starts at
- $50/mo
- Free plan
- Free plan
- API
- API available
- 01
KERNEL
KERNEL provides cloud browser infrastructure for AI agents and web automations, spinning up sandboxed Chromium sessions with stealth, managed auth, GPU acceleration, live view, and telemetry. Developers connect via CDP, WebDriver BiDi, Playwright, OpenAPI, MCP, or official SDKs in TypeScript, Python, and Go.
Best for: Teams building QA, healthcare, e-commerce, or GTM agents that need reliable real-browser automation at scale.
- 02
Cosine
Cosine, hosted at cosine.sh, is a sovereign AI lab training specialized coding agents and models for secure environments. It offers Lumen Scout, Outpost, and Sovereign models plus CLI and cloud surfaces with transparent credit-based plans for developers and regulated teams.
Best for: Developers and organizations that need frontier coding agents inside secure or air-gapped deployments with credit-based usage.
- 03
LangSmith
LangSmith is an enterprise LLM observability, evaluation, and monitoring platform built by LangChain.
Best for: Developers and engineering teams building LLM-powered applications and agents who need debugging, prompt optimization, latency tracking, and quality evaluation.
- 04
Maritime
Maritime hosts persistent AI agents, each in its own Firecracker micro-VM with durable disk. Agents sleep when idle, wake in about a second, and scale from a free tier to paid plans with configurable RAM, SSD, and always-on options.
Best for: Developers shipping user-specific or long-running agents who need isolated VMs with fast wake times.
- 05
Letta
Letta is an AI research lab and product company building stateful agents whose memory and capabilities evolve over time, originating from MemGPT research. It ships Letta Agent software, a CLI, and cloud plans for individuals, teams, and API developers.
Best for: Engineers and teams building long-horizon coding or workflow agents that need durable memory and sandboxed execution.
- 06
Pre.dev
pre.dev is a long-horizon coding agent that plans, builds, and verifies software over extended runs in the browser or terminal. It connects to many SaaS tools, publishes previews, and sells separate RL coding tasks to AI labs through pre.dev Labs.
Best for: Developers and teams who want an autonomous coding agent with planning, verification, integrations, and optional enterprise RL task sourcing.
- 07
cmux
cmux is a free, open-source macOS terminal built on Ghostty for multitasking with AI coding agents. It adds vertical tabs, split panes, notification rings, an in-app browser, and optional cloud VMs on paid plans for remote agent sandboxes.
Best for: Mac developers running Claude Code, Codex, Gemini CLI, or other terminal agents who want organized workspaces and optional cloud VMs.
- 08
Softr
Softr helps teams build client portals, internal tools, and lightweight apps on top of databases with AI app generation, forms, workflows, MCP-connected agents, and mobile views. Builders connect Airtable, SQL, and other sources, then publish authenticated experiences without custom front-end code.
Best for: Ops teams and startups that need gated portals and internal tools on live business data without hiring full-stack developers.
- 09
Mem0
Mem0 provides persistent memory infrastructure for AI agents and applications so context survives across sessions, users, and agents. The platform offers hosted plans with SDK integration plus open-source options for developers building production agents that need durable recall.
Best for: Agent builders and app teams that need hosted memory layers with defined add and retrieval quotas.
- 10
Browserbase
Usage-based plans start free and scale to Developer and Startup tiers for production agent workloads.
Best for: Teams building agents that must browse, authenticate, and extract data from sites without traditional APIs.
Freestyle alternatives: common questions
What is the best free alternative to Freestyle?
KERNEL has an ongoing free plan. Free tier is $0 per month plus usage, includes $5 monthly free credits, five concurrent browsers, live view, stealth, managed auth for three connections, and one-day session replays. Free plans change, so check the vendor before relying on one.
What is the cheapest Freestyle alternative?
Pre.dev has the lowest listed starting price at $10/mo, compared with $50/mo for Freestyle.
Which Freestyle alternatives have an API?
KERNEL, LangSmith, Maritime, Letta, Pre.dev mention API or developer access.