OpenAI Responses API vs Devin

A side-by-side comparison to help you choose the right tool.

OpenAI Responses API scores higher overall (87/100)

But the best choice depends on your specific needs. Compare below.

Pricing
Usage-based API pricing; costs depend on the models and tools you use.
Free plan
No
Best for
Product teams building assistants or agents on OpenAI, Developers migrating from older endpoint patterns, Apps that need streaming and tool invocation in one API
Platforms
api
API
Yes
Languages
en
Pricing
Free Devin Review for any GitHub PR. Flexible pay-as-you-go plan at $20/month plus compute usage. Team and Enterprise plans available with custom pricing.
Free plan
Yes
Best for
Engineering teams that want to delegate well-scoped coding tasks to an autonomous agent, Developers who need a second pair of eyes on PRs via the free Devin Review feature, Startups moving fast who need an AI that can take a ticket end-to-end without supervision, Teams evaluating autonomous AI engineers alongside Copilot and Cursor
Platforms
web
API
Yes
Languages
en

Choose OpenAI Responses API if:

  • You are Product teams building assistants or agents on OpenAI
  • You are Developers migrating from older endpoint patterns
  • You are Apps that need streaming and tool invocation in one API
Read OpenAI Responses API review →

Choose Devin if:

  • You are Engineering teams that want to delegate well-scoped coding tasks to an autonomous agent
  • You are Developers who need a second pair of eyes on PRs via the free Devin Review feature
  • You are Startups moving fast who need an AI that can take a ticket end-to-end without supervision
  • You want to start free
Read Devin review →

FAQ

What is the difference between OpenAI Responses API and Devin?
OpenAI Responses API is openai's newer response-oriented api surface for building assistants and agents with streaming, tools, and model control. Devin is devin is an autonomous ai software engineer by cognition ai that plans, codes, debugs, and deploys across full codebases in a cloud-based ide. devin 2.0 introduced parallel agents, a $20/month plan, and a free code review tool for any github pr.
Which is cheaper, OpenAI Responses API or Devin?
OpenAI Responses API: Usage-based API pricing; costs depend on the models and tools you use.. Devin: Free Devin Review for any GitHub PR. Flexible pay-as-you-go plan at $20/month plus compute usage. Team and Enterprise plans available with custom pricing.. Devin has a free plan.
Who is OpenAI Responses API best for?
OpenAI Responses API is best for Product teams building assistants or agents on OpenAI, Developers migrating from older endpoint patterns, Apps that need streaming and tool invocation in one API.
Who is Devin best for?
Devin is best for Engineering teams that want to delegate well-scoped coding tasks to an autonomous agent, Developers who need a second pair of eyes on PRs via the free Devin Review feature, Startups moving fast who need an AI that can take a ticket end-to-end without supervision, Teams evaluating autonomous AI engineers alongside Copilot and Cursor.