Machine Learning · pricing
LangChain pricing
LangChain publishes 2 tiers. Below is each one, what it adds over the tier beneath it, and where the ladder stops being worth climbing for most people.
As of 30 August 2026, LangChain pricing is free across 2 published tiers. Figures are the vendor's list prices as recorded on this page's last check; the vendor's site is the final word.
- Entry price
- Free
- Model
- Freemium
- Tiers
- 2
- Free tier
- Yes
LangChain plans, side by side
Every published tier in ascending order of price, with the number of features each one lists. An absence here means the record does not itemise it, not that the tier lacks it.
| Plan | Price | Features listed | Step up from the tier below |
|---|---|---|---|
| Open Source | Free | 2 | Entry tier |
| LangSmith | $39/month | 3 | +$39/month, 3 more features |
What each tier adds
The set difference between each tier's feature list and the one beneath it. Where a tier lists nothing new, the vendor has either stopped repeating the inherited list or the tier raises limits rather than adding capability, the record does not distinguish the two, so this page does not either.
Open Source
FreeThe entry tier. It covers full framework, community support.
LangSmith
$39/monthOver Open Source, this tier adds:
- Debugging
- Monitoring
- Testing
Where LangChain stops being free
Open Source, Free
- Full framework
- Community support
LangSmith, $39/month
The first thing you pay for:
- Debugging
- Monitoring
- Testing
What the product covers
The full LangChain feature record, grouped as the catalogue groups it. This is the product as a whole; the record does not map every feature onto a specific tier.
Other
- Chains and agents
- Retrieval-augmented generation
- Memory management
- Tool integration
- Prompt templates
Integrations
- OpenAI
- Anthropic
- Hugging Face
- Pinecone
- Chroma
Platform
- Linux support
- Mac support
- Windows support
People bring LangChain in for building llm applications and agents in python or javascript, tracing and debugging llm chains and agent runs, evaluating prompt and model changes against datasets. If that is not the job you are buying for, the alternatives to LangChain are worth a look before you commit to a tier.
How that compares in Machine Learning
Too few machine learning tools in this directory publish a starting price to quote a meaningful median, so the table below is a like-for-like list rather than a ranking.
| Tool | Entry price | Model | Rated | Head to head |
|---|---|---|---|---|
| LangChain (this page) | Free | freemium | - | |
| ClearML | Free | Open-source self-hosted, with paid hosted and enterprise tiers | - | vs LangChain |
| Langwatch | Free, then €29/month | Tiered subscription with usage-based overage charges | - | vs LangChain |
| Haystack | Free | Open-source with optional paid enterprise support | - | vs LangChain |
| Semantic Kernel | Free | Open source, no pricing | - | vs LangChain |
| Fal AI | $1.89/hour | usage-based | - | vs LangChain |
| H2O.ai | Free | freemium | - | vs LangChain |
Ratings are aggregated from third-party sources and imported with each catalogue entry, they are not reviews hosted on Softwr. How each figure is used is set out on the LangChain badges page.
Before you pay for LangChain
Three things this page cannot tell you, and all three change the bill. The record carries a price and a billing period but not the unit - per-seat and flat-rate pricing are indistinguishable in this data, so a five-person team may be looking at five times the figure above. It carries no annual rate, so any discount for paying yearly is not something this page can quote. And it carries no trial length.
What it can tell you is the shape of the ladder: 2 tiers between Free and $39/month, with the jump itemised above. Because there is a free tier, the cheapest way to answer the rest is to use it before paying anything.
LangChain runs on linux, mac, windows, and is published by LangChain, Inc. of San Francisco, California. The full record is on the LangChain review, and the rest of the category is under best machine learning tools.
LangChain pricing questions
- How much does LangChain cost?
- LangChain publishes 2 tiers, from Free for Open Source up to $39/month for LangSmith. The entry tier costs nothing.
- Does LangChain have a free plan?
- Yes. The Open Source tier costs nothing and covers full framework, community support. Paying starts at $39/month for LangSmith.
- What is the difference between Open Source and LangSmith on LangChain?
- LangSmith costs $39/month against Free, and adds debugging, monitoring, testing.
- Which machine learning tools can I use without paying?
- 7 of the 8 machine learning tools listed alongside LangChain have a free tier: ClearML, Langwatch, Haystack, Semantic Kernel, H2O.ai.
- What am I actually paying for with LangChain?
- The record lists 13 features across 3 areas: other, integrations, platform. In practice it is brought in for building llm applications and agents in python or javascript, tracing and debugging llm chains and agent runs, evaluating prompt and model changes against datasets.
- Does LangChain charge per user?
- The record carries a price and a billing period for each of its 2 tiers, but not the unit that price is charged in. Per-seat and flat-rate billing look identical in this data, so check the vendor's page before budgeting for a team.
- Are these LangChain prices current?
- They are what the catalogue entry holds, refreshed when the entry is. Vendors change pricing without notice and nobody at Softwr re-verifies each tier by hand, so treat this as a structured summary and the vendor's own pricing page as the authority.
- What should I compare LangChain against before paying?
- The closest machine learning tools in this directory are ClearML, Langwatch, Haystack, Semantic Kernel. Each has a side-by-side comparison with LangChain covering price, platforms and features.