OpenAI Agents SDK alternatives

Source-available LLM app platform with agent workflows and RAG.

freemiumCloud Sandbox free; self-host Community free under restricted license; cloud Professional/Team paid yearly

Python framework for multi-agent crews — roles, tasks and processes.

freemiumopen source (MIT); cloud Free Basic (50 exec/mo); Enterprise custom

Graph-based agent orchestration from LangChain — stateful and controllable.

freemiumframework free open-source; LangSmith Plus $39/seat/mo

OpenAI's agent-building API — tools, web search and file search built in.

paidpay-per-token; e.g. GPT-5.6 Luna $0.20/1M input

Microsoft framework for building multi-agent LLM applications.

freeopen source (MIT)

No-code AI agent platform with 200+ models and 1,000+ integrations, plus Remy for building apps from specs.

freemiumfree tier: 1 agent, 1,000 runs/mo; Individual $20/mo ($16/mo annual); Business custom; AI model usage billed at cost on top

Open-source browser agent library plus managed cloud browsers — task-in, work-out, or raw CDP.

freemiumOSS library free; Cloud Free $0 (10 agent tasks/mo); PAYG credits; Dev $29/mo, Business $299/mo, Scaleup $999/mo; browser time $0.02/hour; default V4 model GPT-5.6 Luna $0.24/$1.44 per 1M tokens

Open-source framework for multi-agent collaboration and role-playing.

freeopen source (Apache 2.0)

MCP memory server that connects facts in an entity graph so agents reason over what they remember.

freemiumFree personal tier; Pro for higher limits and graph inspection; Team/Enterprise custom

Runtime guard dog for AI coding agents that blocks unsafe tool calls before they execute.

freeApache-2.0 open source core; enterprise platform on roadmap

Isolated cloud sandboxes for agents — firecracker VMs billed per second of CPU/RAM.

freemiumHobby $0 + usage (one-time $100 credits, 1h sessions, 20 concurrent); Pro $150/mo + usage (24h sessions, 100 concurrent); default 2 vCPU $0.000028/s

TypeScript agent framework plus a hosted platform — OSS to build, Cloud to observe and run.

freemiumframework OSS; Platform Starter $0 (100k obs events, 24 CPU-h); Teams $250/mo; gateway tokens at market + 5.5%

Pydantic's typed Python agent SDK — models, tools, evals, OpenTelemetry, not a hosted studio.

freeMIT SDK free; you pay model/provider bills; Pydantic Logfire observability is a separate product

No-code platform for building AI agent workforces for ops teams.

freemiumfree tier; paid plans usage-based from ~$19/mo

Autonomous multi-agent orchestration engine that runs coding agents in parallel against a repo.

freeGPL-3.0 open source; bring your own runner (Claude Code, Codex, etc.)

General-purpose autonomous agent that executes multi-step web tasks.

freemiumfree daily credits; Pro from $20/mo

Source-available cloud coding teammate from the Roo Code team, working in chat and returning PRs with live previews.

freemiumSelf-hosted free up to 10 users (Fair Core License, ALv2 after 2 years); paid per-capability tiers above; Roomote Cloud: 7-day trial, BYO inference key