Shortlist by what you need
Start here if you know why you are leaving E2B.
Want the closest match?
Together AIMost similar to E2B in what it does, its category and its price.
Visit (opens Together AI in a new tab)Need a free plan?
ModalHas a free plan, rated 4.5 out of 5.
Visit (opens Modal in a new tab)Want the lowest price?
IronClawFrom $20/mo, the lowest starting price here.
Visit (opens IronClaw in a new tab)Want the best rated?
LangChainRated 4.4 out of 5 in our review, against 4.2 for E2B.
Visit (opens LangChain in a new tab)
At a glance
Green means better than E2B, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 E2BBaseline | 4.2 | Free | Yes | Sandboxed cloud environments now used by 88% of the Fortune 100 | |
| Together AI | 4.3+0.1 | Free | Yes | Crossed $1.15B in annual bookings, serving Cursor and Cognition among its customers | vs E2B |
 Buda | 3.8−0.4 | Free | Yes | Agents with their own sandboxed computers, their own drives and a version-controlled trail. | vs E2B |
| Modal | 4.5+0.3 | Free | Yes | Serverless cloud platform for running AI workloads, with GPU inference, fine-tuning and training, sandboxes for agents, batch jobs and multi-node clusters, billed per second with $30 of free compute a month. | vs E2B |
 ChatBotKit | 3.6−0.6 | Free | Yes | Build production AI agents that reason, plan and execute multi-step tasks - resolving tickets, qualifying leads, processing documents - with MCP tool-calling, RAG knowledge bases, and built-in content-moderation guardrails. | vs E2B |
 Orbofi | 3.0−1.2 | Free | Yes | One prompt deploys a fully autonomous AI agent in 60 seconds with 30,000+ skills and its own sandboxed execution environment - each agent also trades as a tokenized 'Autonomous Agent Coin.' | vs E2B |
 Inngest | 4.3+0.1 | $99/mo | Yes | Inngest gives developers durable execution and event-driven workflow orchestration without managing queues or infrastructure. | vs E2B |
| IronClaw | 3.9−0.3 | $20/mo | Yes | Open-source AI agent runtime that isolates credentials in encrypted vaults so autonomous agents never see raw secrets. | vs E2B |
| LangChain | 4.4+0.2 | Free | Yes | The open-source framework behind 90 million monthly downloads and 35% of the Fortune 500 | vs E2B |
The alternatives in detail
In order of how closely each one matches E2B.
Together AI
4.3Free
vs E2B+0.1
Crossed $1.15B in annual bookings, serving Cursor and Cognition among its customers.
- Platform for training, fine-tuning, and running open-source AI models at scale
- Usage-based pricing per token or GPU-hour depending on the service
- $1.15B in annual bookings as of mid-2026
Strong focus on open-source models reduces dependence on closed providers
Usage-based pricing requires careful monitoring at production scale
Buda
3.8Free
vs E2B−0.4
Agents with their own sandboxed computers, their own drives and a version-controlled trail.
- Multiple specialised agents deployed per department
- Agent Computers as isolated execution sandboxes
- Agent Drive and shared Space Drive separation
Output is reviewable - steps, previews and versions, not just a result
No pricing published and no company named
Modal
4.5Free
vs E2B+0.3
Serverless cloud platform for running AI workloads, with GPU inference, fine-tuning and training, sandboxes for agents, batch jobs and multi-node clusters, billed per second with $30 of free compute a month.
- Serverless GPU inference with OpenAI-compatible endpoints
- Fine-tuning, LoRA and reinforcement learning on GPUs with fast start times
- Sandboxes for coding agents and untrusted code
$30 of free compute each month on the Starter plan
Per-second pricing needs estimating for real workloads
ChatBotKit
3.6Free
vs E2B−0.6
Build production AI agents that reason, plan and execute multi-step tasks - resolving tickets, qualifying leads, processing documents - with MCP tool-calling, RAG knowledge bases, and built-in content-moderation guardrails.
- Multi-step autonomous agent reasoning and execution
- MCP-based tool calling connecting agents to APIs and databases
- RAG knowledge bases across multiple document formats
Built-in governance (guardrails, observability) matters for genuine production use
Pay-for-compute billing means costs scale with actual usage, less predictable than flat pricing
Orbofi
3.0Free
vs E2B−1.2
One prompt deploys a fully autonomous AI agent in 60 seconds with 30,000+ skills and its own sandboxed execution environment - each agent also trades as a tokenized 'Autonomous Agent Coin.'.
- One-prompt AI agent deployment in roughly 60 seconds
- 30,000+ skills across productivity, creation, search, and DeFi
- Isolated sandbox with bash and code execution per agent
Genuinely fast, real agent deployment with verifiable sandboxed execution
Agent value is entangled with speculative token trading, not purely functional utility
Inngest
4.3$99/mo
vs E2B+0.1
Inngest gives developers durable execution and event-driven workflow orchestration without managing queues or infrastructure.
- Durable step functions with automatic retries and state persistence
- Event-driven triggers for background jobs and scheduled functions
- Open-core architecture runnable locally or on Inngest Cloud
Free Hobby tier with no credit card required lowers the barrier to first use
Pro plan jumps to $99/month, a real step up from the free tier for growing usage
IronClaw
3.9$20/mo
vs E2B−0.3
Open-source AI agent runtime that isolates credentials in encrypted vaults so autonomous agents never see raw secrets.
- Encrypted credential vault that keeps secrets out of the language model's context
- Per-tool WebAssembly sandboxing with no filesystem or network access by default
- Real-time outbound traffic scanning that blocks likely credential exfiltration
Open-source and self-hostable for teams that do not want to depend on one vendor
Launched in 2026, too new for a long independent security track record
LangChain
4.4Free
vs E2B+0.2
The open-source framework behind 90 million monthly downloads and 35% of the Fortune 500.
- Standard building blocks for chains, retrieval, memory, and tool calling
- Free, open-source core framework with a massive existing ecosystem
- 90 million combined monthly downloads with LangGraph as of 2026
Free, open-source core with no licensing cost for the framework itself
Production observability and hosted deployment require separate paid products
FAQ
Questions people ask
Is E2B free?
E2B has a free plan.
What is the best free alternative to E2B?
Modal is the highest-rated alternative here with a free plan (4.5 out of 5). Other free options: LangChain, Together AI, Inngest.
What is the cheapest alternative to E2B?
Among paid plans, IronClaw has the lowest starting price (from $20/mo). If you need it free, start with Modal.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.