Runtime vs Devin
Runtime is the agent harness for payment teams, with agents for operations work in your cloud. Devin, from Cognition, is an autonomous AI software engineer. Compare users, models, and fit.
TL;DR: Runtime is the stronger choice for payment and risk operations teams, and runs coding agents like Claude Code and Codex alongside ops agents in your cloud. Devin is one of the most capable autonomous software engineers for modernization and migration work.
| Feature |  Runtime |  Devin |
|---|---|---|
| What it is | Agent harness for payment and risk ops | Autonomous AI software engineer |
| Users | Ops, risk, compliance, support, plus engineering | Engineering teams |
| Large code migrations | Possible with coding agents | Core strength |
| Operations workflows | Core use case | Not the focus |
| Choice of agent and model | Claude Code, Codex, OpenCode, any model | Devin |
| Runs in your cloud | Yes, or fully self-hosted | Enterprise deployment options |
| Approvals on money movement | Built in | Not applicable |
| Forward-deployed engineers | Payments domain experts | Cognition engineers |
Devin and Runtime at a glance
Devin is an autonomous AI software engineer from Cognition. Enterprises use it for large engineering programs like modernizing legacy code and migrating applications, often with Cognition's own engineers working alongside. Cognition crossed $1B in run-rate revenue in 2026.
Runtime is the AI agent harness for payment teams. From payment ops to risk, compliance, and support, anyone on the team can build agents that work their queues on their own computers inside your cloud, called from Slack, Teams, email, SMS, or voice, with approvals and a full audit trail.
Devin is for engineering leaders with big code programs. Runtime is for fintech operators who want agents across ops, risk, and finance, with engineering in control.
How they differ
Payments depth, not general software
Devin's domain is code. Runtime's domain is money movement: processor reason codes, ACH return codes, bank files, network rules, reserves, and settlement. Agents are built from your ops team's SOPs and work exceptions across your ledger, processor, and tickets.
Your cloud, your sandbox, your models
Runtime runs agent computers in your AWS, GCP, or Azure account, or fully self-hosted. You can bring your own sandbox provider and your own models, including open-weight models served in your cloud for PCI and PII work, so card data never leaves your environment.
Harness and model routing
Devin is one agent. Runtime routes work across harnesses like Claude Code, Codex, and OpenCode and across models, with fallbacks when a provider goes down. You pick the best model per task and aren't tied to one vendor's roadmap.
Approvals and an audit trail for money movement
Ops agents need guardrails coding agents don't. Runtime agents start read-only, ask for approval before releasing a payout or booking a ledger entry, and record every query, tool call, approval, and cost. A forward-deployed engineer with a payments background sets those guardrails up with your team.
Where Devin is stronger
- Large code migrations and modernization. Its core strength.
- Autonomous software engineering. One of the most capable coding agents available.
- Vendor engineers alongside. Cognition engineers often work with enterprise customers on big programs.
- Scale. Cognition crossed $1B in run-rate revenue in 2026.
Which should you choose
Choose Devin if
- The work is software engineering, especially modernization and migrations
- You want an autonomous engineer with vendor engineers alongside
- Your budget is the IT services line
- Users are engineering teams
Choose Runtime if
- Your users are payment ops, risk, compliance, finance, and support teams
- Card data or PII has to stay in your cloud with models you choose
- You want to route across Claude Code, Codex, OpenCode, and any model
- You need approvals on money movement and an audit trail your sponsor bank will accept
See Runtime on your busiest queue
Bring one SOP. A forward-deployed AI engineer builds the first agent with your team, inside your cloud.
Frequently asked questions
Is Devin good for fintech companies?
Devin is a strong choice for fintech engineering work like modernizing legacy code and migrating applications. It isn't built for operations teams. Runtime is built for payment ops, risk, compliance, finance, and support, and can run coding agents for engineering too.
Can Runtime run coding agents like Devin?
Runtime runs Claude Code, Codex, and OpenCode with routing and fallbacks across models. Teams use them for engineering tasks alongside ops agents. For very large migration programs, Devin with Cognition's engineers is a specialized option.
What is the best Devin alternative for payment operations?
Devin is for software engineering. For payment operations work such as held payouts, returns, disputes, and recon breaks, Runtime gives ops teams agents that investigate across your ledger and processor, with approvals before money moves.
Can Runtime run in my own cloud?
Yes. Runtime agent computers run in your AWS, GCP, or Azure account, or fully self-hosted via Helm, with your own sandbox provider and models if you prefer.
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