A managed agent platform or an open-source framework plus LangSmith
LangChain is a mature open-source agent framework. Connic runs framework-style Python agents with hosting, connectors, tracing, and approvals included; its platform data and connic/* inference stay in the EU.
LangChain's 1.0 release in October 2025 stabilized its agent API on the LangGraph runtime, and the MIT-licensed project remains actively maintained. Its official docs list more than 1,000 integrations. Teams using the OSS framework still choose and operate the runtime, triggers, observability, and data stores around it, or add LangSmith for first-party managed services.
LangSmith supplies managed deployment, traces, token and cost tracking, and evals. Its Developer plan includes free tracing usage, while managed deployment is part of the $39-per-seat Plus plan plus usage. LangSmith offers an EU region on every plan, although contracts run through LangChain, Inc. in the US and region-independent billing data remains in the US. Connic provides a managed runtime under a German contract that runs framework-style Python agents and keeps its platform data and connic/* inference in the EU. Connectors, traces, judges, guardrails, approvals, and A/B testing are included; full-Project residency depends on customer configuration. Connic's Composer SDK is deliberately close to LangChain ergonomics, and its migrate tooling converts LangChain projects.
Feature Comparison
Connic vs LangChain, capability by capability.
Development Experience
| Feature | Connic | LangChain |
|---|---|---|
| Agent configurationConnic uses simple YAML + Python. LangChain requires learning its chain/agent abstractions. | Yes | Yes |
| Learning curveConnic: YAML + Python functions. LangChain: chains, agents, runnables, LCEL, and the LangGraph runtime underneath. | Yes | Partial |
| Local testing with hot-reloadConnic offers `connic dev` with 2–5s hot-reload. LangGraph's `langgraph dev` command also provides hot reload without Docker. | Yes | Yes |
| Multiple LLM provider supportBoth support major BYOK providers; every Connic Project can also use exact connic/* models. | Yes | Yes |
EU & Compliance
| Feature | Connic | LangChain |
|---|---|---|
| Managed EU data residencyConnic's platform data and connic/* inference stay in the EU; end-to-end Project residency depends on customer configuration. LangSmith's EU region is available on every plan, while managed deployment requires Plus or Enterprise and region-independent billing data stays in the US. | Yes | Yes |
| EU contract counterpartyConnic contracts through a German company. LangChain OSS has no counterparty at all; once a team buys the vendor's platform, agreements run through LangChain, Inc. (US). | Yes | No |
| EU AI Act toolingConnic maps execution logs, human approvals, and guardrails to deployer obligations. LangChain includes HITL and PII guardrail middleware, while customers still host it and map the resulting evidence to their obligations. | Yes | Partial |
| EU-hosted platform data and connic/* inferenceConnic keeps its platform data and connic/* inference in the EU. LangChain OSS runs in the customer's chosen region, and LangSmith offers an EU managed region; LangSmith billing data remains in the US. | Yes | Yes |
Production Infrastructure
| Feature | Connic | LangChain |
|---|---|---|
| Managed hosting includedConnic includes managed deployment in its platform. LangChain OSS does not include hosting; LangSmith Deployment adds managed hosting on Plus and Enterprise plans. | Yes | Partial |
| Git-based deploymentsConnic supports push-to-deploy workflows. LangSmith Deployment supports GitHub and CLI deployment for LangGraph applications. | Yes | Yes |
| Auto-scalingConnic scales automatically. LangChain OSS leaves scaling to the customer, while managed LangSmith Deployment includes horizontal scaling. | Yes | Partial |
| Environment managementConnic has built-in dev/staging/prod environments. LangChain OSS leaves environments to the host; LangSmith Deployment adds managed deployment environments. | Yes | Partial |
| Secrets managementConnic includes secrets per environment. LangChain OSS relies on the hosting environment, while LangSmith Deployment provides managed deployment configuration. | Yes | Partial |
Integrations & Triggers
| Feature | Connic | LangChain |
|---|---|---|
| Webhook triggersBuilt-in with Connic. LangServe provides basic HTTP but requires setup. | Yes | Partial |
| Scheduled jobs (Cron)Connic has a native cron connector. LangChain's OSS framework has no managed scheduler, so the application or deployment platform supplies it. | Yes | No |
| Message queues (Kafka, SQS)Connic has named Kafka and SQS connectors. LangChain's integration ecosystem provides libraries, while queue-trigger wiring remains part of the application or hosting platform. | Yes | No |
| Email triggersConnic has a native email connector. LangChain provides integration libraries, while inbound-email triggering remains application or platform wiring. | Yes | No |
| Payment events (Stripe)Connic has a native Stripe connector. A LangChain application handles Stripe through its webhook and runtime integration. | Yes | No |
Observability & Evals
| Feature | Connic | LangChain |
|---|---|---|
| Managed tracing includedConnic includes automatic tracing. LangChain OSS has no managed trace store, while LangSmith provides first-party tracing with a free Developer allowance and paid usage above plan limits. | Yes | Yes |
| Token and cost tracking includedConnic includes token and cost tracking. In the LangChain ecosystem, LangSmith provides it as a first-party managed service rather than part of the OSS framework. | Yes | Yes |
| Human approvals as a managed featureApprovals are a platform feature in Connic. LangChain ships HITL and PII-redaction middleware as customer-wired and customer-hosted code, not as managed features. | Yes | Partial |
| LLM-judge evals includedConnic includes a first-party judge service. LangChain OSS has no managed evaluator, while LangSmith provides first-party evaluation workflows. | Yes | Yes |
| A/B testing in productionConnic runs statistical A/B tests between agent versions in production. No equivalent first-party production A/B service was listed in the LangChain or LangSmith docs reviewed in August 2026. | Yes | No |
Retrieval & RAG
| Feature | Connic | LangChain |
|---|---|---|
| Built-in vector storageConnic includes managed vector storage. LangChain requires an external vector database. | Yes | No |
| Document ingestionBoth support PDF, images, text. Connic includes OCR automatically. | Yes | Yes |
| Semantic searchBuilt into Connic. LangChain needs vector store + retriever setup. | Yes | Partial |
Pricing
| Feature | Connic | LangChain |
|---|---|---|
| Free to startLangChain is MIT-licensed and free to use. Connic Basic has no monthly fee and includes a one-time €20 credit; paid plans start at Developer €40/month. | Yes | Yes |
| Credit and custom termsConnic Developer and Pro start at €40 and €200 per month, respectively; the selected monthly amount is released as Project credit. Enterprise uses custom commercial terms. Base rates before package discounts include €0.0337 per started LLM-agent run, €0.00042 per runtime second, and €0.00342 per GB-hour of storage. A LangChain production stack bills across hosting, LangSmith seats, and any added observability. | Yes | No |
| Not billed per seatAdding teammates doesn't change the Connic plan price. The framework is free, while LangSmith Plus costs $39 per seat per month plus usage and includes managed deployment. | Yes | Partial |
The EU question
A framework cannot have a residency problem, which sounds reassuring until it becomes clear that it cannot have a residency answer either. LangChain agents run on the operator's infrastructure, as does everything around them: the traces, the eval harness, the approval flow, the vector database. Each assembled piece brings its own hosting decision, its own sub-processor list, and its own line in the DPO's review.
LangSmith provides a first-party managed path. Its EU region is available on every plan, while managed deployment requires Plus or Enterprise. The main GCP region is in the Netherlands. Agreements still run through LangChain, Inc., a US corporation, and region-independent billing data is stored in the US. EU buyers therefore get an EU data plane under a US contract.
Connic's answer is explicit: a German contract counterparty, EU-hosted platform data, and EU-hosted connic/* inference. Deployment regions and customer-configured components determine the rest of the Project boundary. Related analysis is available in the EU data residency shortlist and Connic feature mapping for the EU AI Act.
Where LangChain genuinely fits
For a highly custom LLM application that requires control over every abstraction layer, LangChain is a strong choice: more than 1,000 documented integrations, a stabilized 1.0 API, and in-framework middleware for human-in-the-loop and PII redaction when those behaviors need to be expressed in organization-controlled code. Teams with platform engineering capacity get direct control over the runtime and surrounding services.
Using LangChain OSS still means selecting and operating hosting, triggers, tracing, evals, and approval infrastructure. LangSmith supplies many of those managed services in a separate product under a US contract. Connic keeps Python agents with framework-style ergonomics and supplies the runtime and production services as one managed platform with EU-hosted data and connic/* inference. Migration resources include the LangChain migration guide and the comparison of the best EU agent platforms for 2026.
Why teams choose Connic
What teams get on day one without writing connectors, wiring observability, or running infrastructure.
The Bottom Line
LangChain is an OSS framework, and LangSmith adds first-party managed tracing, evals, and deployment. Connic bundles framework-style Python agents and production services in one platform with EU-hosted platform data and connic/* inference. Full-Project residency depends on configuration.
Use Connic when
- Fast production deployment without DevOps overhead
- EU data residency and an EU contract counterparty are procurement requirements
- Enterprise integrations for Kafka, SQS, Stripe, and email from day one
- Tracing, evals, and approvals in the same Connic Project rather than a separate LangSmith plan
- Project credit or custom Enterprise terms rather than seats plus infrastructure
Use LangChain when
- Fine-grained control over every abstraction layer
- A highly custom LLM application rather than production agents
- Existing DevOps expertise and infrastructure
- LangChain's large community integration ecosystem
- Research or prototyping without a production timeline
Frequently Asked Questions
Bring the workflow, trigger source, compliance constraints, and deployment path under evaluation. We will help separate what LangChain should handle from what belongs in a managed agent runtime.
Compare with SalesOther platforms on the shortlist
Head-to-head comparisons against the platforms most teams weigh alongside Connic. For the full field, survey the 2026 agent deployment platform landscape.
Connic vs AutoGen + Microsoft Agent Framework
AutoGen is in maintenance mode, with Microsoft Agent Framework as its successor. The successor can run as self-hosted SDK code or through Foundry Hosted Agents, where residency depends on the selected resources, models, and tools.
Connic vs CrewAI
MIT-licensed Python and YAML framework plus CrewAI AMP for managed deployment, tracing, evaluations, integrations, knowledge, and approvals. Standard managed-region choice is not publicly specified; Enterprise offers vendor cloud, customer VPC, or customer infrastructure.
Connic vs Self-Hosting
Operating an agent stack on infrastructure controlled by the organization gives direct control over the runtime and its data, subject to configured cloud, model, and tool dependencies. This comparison uses production Kubernetes as a representative baseline and counts the operating work left with the organization.
Connic vs AI by Zapier
Zapier is moving standalone Agents into AI by Zapier, an agentic step inside the Zap editor with model choice, BYOK, tools, knowledge, approvals, and task-based billing. It suits UI-driven automation; Connic remains Git-native and keeps its managed core in the EU.
Connic vs Amazon Bedrock AgentCore
AWS's managed, framework-agnostic agent infrastructure spans runtime, memory, identity, gateways, observability, policy, and evaluations across multiple EU regions. Connic offers a more opinionated Python and YAML path with first-party connectors and an integrated Enterprise governance surface.
Connic vs Google ADK + Agent Platform
Google's current stack combines the open-source Agent Development Kit with a managed Agent Runtime, custom containers, sessions, memory, evaluation, observability, and Google Cloud controls. Connic narrows that surface into a Python and YAML operating model with managed connectors, selectable EU Project regions, and Enterprise governance.