DevinFree plan
Paid from
$20 a month
View plans and limitsUpdated 4 September 2026 · Independent comparison
Devin vs LangChain / LangSmith:
which should you use?
Devin and LangChain / LangSmith, side by side. Find the one that fits what you need to do.
Find your best fitThe 30-second answer
Devin autonomous agent that takes a ticket and works it to completion.
LangChain / LangSmith the standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did.
Pricing, simplified
Start free. Upgrade when you need more.
LangChain / LangSmithFree plan
Paid from
$39 a month
View plans and limitsThe 30-second comparison
If you only read one section, make it this one. Rows where both sides say the same thing are left out — the point is where they differ. Where each row came from is listed underneath.
| Category | Devin | LangChain / LangSmith | Better fit |
|---|---|---|---|
| What it's built for | Autonomous agent that takes a ticket and works it to completion. There is a free tier, with paid plans above it. | The standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did. | Tie |
| Free plan | Yes. Free plan at $0 | Yes. Open-source framework; LangSmith Developer is free for one seat, 5,000 traces a month | Tie |
| Cheapest way to pay | $20 a month. | $39 a month. | Devin |
| What the paid tiers cost |
|
| Tie |
| What to watch out for | Autonomy means less visibility into what changed — review discipline matters more, not less. Larger organisations may still be routed through sales rather than self-serve. | A developer library, not an application. Both LangSmith tiers meter traces above a monthly allowance, so the seat price is a floor rather than the bill, and the free tier is one seat only. | Tie |
| Runs on your own machine | Hosted service only — your material goes to their servers. | Can be run on your own machine, so the material never leaves it. | LangChain / LangSmith |
| Made by | Cognition — San Francisco, US. | LangChain — San Francisco, US. | Tie |
Neither leads on the 7 rows above: 1 each. The job decides it, not the table.
Devin or LangChain / LangSmith
Neither leads on the rows above — the job decides it.
✓ Autonomous agent that takes a ticket and works it to completion.
✓ You want the cheaper paid plan, $20 against $39
✓ There is a free tier, with paid plans above it.
✓ Free plan at $0
The standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did.
LangChain / LangSmith is the better answer when the job is what it was built for rather than what the pick above does broadly.
✓ Autonomous agent that takes a ticket and works it to completion.
✓ You want the cheaper paid plan, $20 against $39
✓ There is a free tier, with paid plans above it.
✓ Free plan at $0
How we know
Every row that separated these two, and where it came from. Nothing here is a hands-on test — if a line rests on a vendor’s own pricing page, it says so and links it.
| Row | Favours | Weight | Where it came from |
|---|---|---|---|
| Cheapest way to pay | Devin | Everything else | From each vendor’s own pricing page. Dates and pages are listed below. |
| Runs on your own machine | LangChain / LangSmith | How well it does the job | From this site’s own catalogue record for each product — compiled by hand, not imported. How a product gets listed |
The prices
Devin. Read by hand on 4 September 2026, because Devin cannot be read automatically: devin.ai answers 429 to automation on every run; the docs carried no prices. Verify by hand. devin.ai/pricing
LangChain / LangSmith. Read by hand off langchain.com on 4 September 2026. It is not on the monthly re-check, so confirm there before paying. langchain.com/pricing
The ratings
The category these two share. Coding, Data & Technical Work — both are listed there in the catalogue, and the fit recorded against each listing is a judgement made here, by hand.
The nine-category grid below. Derived from what each product is listed for, by one script, once per build — so the same pair always reads the same. It is a derivation, not a review.
What this is not
Neither product was run side by side to produce this page. Nobody was paid to appear on it and nothing here is ranked by commission.
To put the same question to both and read the answers yourself, run them side by side — that is a live test, and this is not.
Choose based on what you’re doing
All ten categories, including the ones where neither of these is the answer. These ratings are derived from what each product is listed for, not from running it — a rating here is a reading of the record, and the record is linked.
01
General-Purpose AI Assistants
Questions, brainstorming, explanations, everyday tasks, decision-making, general advice.
Devin
Not a good fitLangChain / LangSmith
Not a good fitBest choice: Neither
02
Search, Research & Academics
Web research, deep research, books, academic papers, citations, news, fact-checking.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
03
Writing, Communication & Language
Emails, reports, essays, editing, summarizing, translation, presentations.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
04
Coding, Data & Technical Work
Programming, debugging, data analysis, spreadsheets, math, engineering, technical research.
Devin
Good fitLangChain / LangSmith
Good fitBest choice: Tie
05
Business, Finance & Professional Work
Business strategy, investing, market research, legal, sales, HR, accounting, consulting.
Devin
Not a good fitLangChain / LangSmith
Not a good fitBest choice: Neither
06
Image & Design
Image generation, photo editing, logos, graphics, product design, advertising creatives.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
07
Video
Video generation and editing, clipping, subtitles, avatars, animation and motion capture.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
08
Audio, Voice & Music
Voice generation, transcription, music, dubbing, sound cleanup and podcast production.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
09
Marketing & Content Creation
Social media, SEO, advertising, copywriting, content ideas, scripts, brand development.
Devin
Bad fitLangChain / LangSmith
Bad fitBest choice: Neither
10
Productivity, Automation & Personal Life
AI agents, workflows, scheduling, meetings, organization, shopping, travel, personal finance.
Devin
Not a good fitLangChain / LangSmith
Not a good fitBest choice: Neither
Autonomous agent that takes a ticket and works it to completion.
by CognitionAutonomous agent that takes a ticket and works it to completion.
You want the cheaper paid plan, $20 against $39
There is a free tier, with paid plans above it.
Free plan at $0
The standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did.
by LangChainThe standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did.
The material cannot leave your own machine
Open-source framework; LangSmith Developer is free for one seat, 5,000 traces a month
The framework is open source and free. LangSmith, the hosted tracing product, has a free tier and paid plans above it
Pricing, simplified
The plans people actually compare, read from each vendor’s own page.
PricingSimple, up-to-date plan overview.
Devinby Cognition
LangChain / LangSmithby LangChainFree version
Devin
Yes — Free plan availableFree plan at $0
LangChain / LangSmith
Yes — Free plan availableOpen-source framework; LangSmith Developer is free for one seat, 5,000 traces a month
Individual plans
Devin
Pro
$20 / month
Max
$200 / month
Teams
$80 / monthor $40 / month
LangChain / LangSmith
Plus
$39 / month
Business plans
DevinNot sold to teams
LangChain / LangSmithNot sold to teams
Enterprise
Devin
Custom pricing
LangChain / LangSmith
Custom pricing
Tell us what you use AI for
Pick your main job and the verdict below changes to match. Every answer is on the page already, so this works as a reader, not a lookup.
The verdict for that job
Evenly matched
Close call. Both cover coding, data & technical work at the same level; both have a free plan you can start on; Devin is cheaper to start paying for, $20 against $39.
7 rows compared
Frequently asked questions
Is Devin or LangChain / LangSmith better?
Neither leads on the 7 rows above: 1 each. The job decides it, not the table. both have a free plan you can start on; Devin is cheaper to start paying for, $20 against $39. Devin: Autonomous agent that takes a ticket and works it to completion. There is a free tier, with paid plans above it. LangChain / LangSmith: The standard framework for wiring a model to your own data, with tracing so you can see why it answered as it did.
Is Devin or LangChain / LangSmith cheaper?
Devin — paid plans start at $20 a month against $39 a month.
Do Devin and LangChain / LangSmith both have free plans?
Yes. Devin: Free plan at $0. LangChain / LangSmith: Open-source framework; LangSmith Developer is free for one seat, 5,000 traces a month.
What should I watch out for?
Devin: Autonomy means less visibility into what changed — review discipline matters more, not less. Larger organisations may still be routed through sales rather than self-serve. LangChain / LangSmith: A developer library, not an application. Both LangSmith tiers meter traces above a monthly allowance, so the seat price is a floor rather than the bill, and the free tier is one seat only.
Read more
Devin
What it is for, who makes it, what it costs and what to use instead.
LangChain / LangSmith
What it is for, who makes it, what it costs and what to use instead.
Best AI for Coding
Programming, debugging, data analysis, spreadsheets, math, engineering, technical research.