LangDB

Best for: Prototypes and side projects - free to start, no sales call; AI agents and automation - an agent-ready surface (MCP / llms.txt); Teams needing broad API coverage out of the box

Avoid if: You have strict compliance requirements

Pricing model

Subscription [2]sourceforge.net/software/product/LangDB/“Starting Price: $49 per month. Free Version: Available.”langdb.ai/pricing/“Simple, Transparent Pricing. Start for free and scale as you grow. Pick a feature set that matches your team's stage, and upgrade as governance and scale needs grow.”

Published pricing

✓ Yes

Free tier

✓ Yes [3]sourceforge.net/software/product/LangDB/“Starting Price: $49 per month. Free Version: Available.”langdb.ai/pricing/“Simple, Transparent Pricing. Start for free and scale as you grow.”

Free tier details

Free cloud tier available at app.langdb.ai; paid tiers start at $49/month. A 7-day free trial of the Professional tier is also activatable from the dashboard. The open-source gateway repo (github.com/langdb/ai-gateway, rebranded vLLora) is source-available under Elastic License 2.0 (ELv2) for the main component, not freely self-hostable for all commercial uses. [4]github.com/langdb/ai-gateway“vLLora is fair-code distributed under the Elastic License 2.0 (ELv2). The inner package llm is distributed under the Apache License 2.0.”blog.langdb.ai/march-2025-product-update“LangDB offers a free 7-day trial of its Professional Tier that can be activated from the dashboard, providing access to full tracing, usage visibility, routing controls, and more with no commitment required.”

Self-serve signup

✓ Yes

Requires sales call

✗ No

Enterprise plan

✓ Yes [5]docs.langdb.ai/enterprise/“Each tenant (enterprise deployment) is provisioned in a dedicated AWS account or GCP project. The environment is isolated per tenant and is set up in a separate AWS account or GCP project, managed by LangDB.”

• Fallback / routing
• Spend controls
• Observability
• Guardrails

Supported actions

unified_chat_completions, openai_compatible_api, model_routing, automatic_fallback, load_balancing, provider_routing, auto_router, percentage_based_routing, latency_based_routing, script_based_routing, response_caching, prompt_caching, spend_limits, budgets, rate_limiting, observability_logging, tracing, guardrails, pii_redaction, prompt_injection_detection, content_moderation, virtual_models, mcp_server_integration, embeddings, image_generation, byo_provider_keys, opentelemetry_tracing [6]docs.langdb.ai/features/routing“The system supports fallback, script-based, optimized, percentage-based, and latency-based routing.”docs.langdb.ai/features/guardrails/“LangDB guardrails enforce safety, compliance, and quality by moderating content, validating responses, and detecting security risks. Security checks identify and mitigate security risks such as PII detection and prompt injection detection.”

Regions

us-east-1 [7]docs.langdb.ai/enterprise/“Each tenant (enterprise deployment) is provisioned in a dedicated AWS account or GCP project.”docs.crewai.com/en/observability/langdb“LANGDB_API_BASE_URL='https://api.us-east-1.langdb.ai'”

Input types

chat completions, embeddings, image generation

Output types

streaming (SSE), JSON, OpenAI-compatible response

Webhooks

– Unknown

Sandbox / test mode

✗ No

SDK languages

Python, TypeScript/Node.js, Rust (self-hosted gateway) [8]pypi.org/project/pylangdb/“pylangdb 0.3.6 — Comprehensive LangDB integration package with enhanced agent support, LLM integration, and distributed tracing”ai-sdk.dev/providers/community-providers/langdb“The LangDB provider is available via the @langdb/vercel-provider module. This is a TypeScript/JavaScript SDK package that enables integration between LangDB and the Vercel AI SDK.”

MCP server

✓ Yes [9]langdb.ai/app/mcp-servers/mcp-gateway-9664edb2-a85e-4f93-b098-1f3a6a97db62“LangDB offers a secure, scalable, and auditable Model Context Protocol gateway with RBAC authentication, RESTful API management, and a self-service portal for seamless internal tool integration and access control.”blog.langdb.ai/working-with-mcp-servers-on-langdb“LangDB makes it incredibly simple to work with MCP servers by enabling OpenAI-compatible API access to different LLMs and external search providers with minimal configuration.”

SOC 2

– Unknown

HIPAA

✗ No [10]docs.langdb.ai/terms“The Services are not tailored to comply with industry-specific regulations (Health Insurance Portability and Accountability Act (HIPAA), Federal Information Security Management Act (FISMA), etc.), so if your interactions would be subjected to such laws, you may not use the Services.”

GDPR

✓ Yes [11]langdb.ai/docs/privacy/“The General Data Protection Regulation (GDPR) and UK GDPR require LangDB to explain the valid legal bases they rely on in order to process personal information. LangDB has organizational and technical processes and procedures in place to protect personal information.”

ISO 27001

– Unknown

PCI DSS

– Unknown

Published SLA

✗ No [12]docs.langdb.ai/terms“Terms of Service - Documentation - LangDB AI (no SLA or uptime commitment found in terms or on any trust/security page)”

Known restrictions

Guardrails available in paid tiers only, Cost control features (budgets, per-user limits) available in Business and Enterprise tiers only, Starter tier has a maximum daily usage limit of $10, Enterprise deployments are provisioned in a dedicated AWS account or GCP project managed by LangDB, Services are not tailored to comply with HIPAA; HIPAA-regulated users may not use the service, The open-source gateway repo (langdb/ai-gateway, rebranded vLLora) is source-available under Elastic License 2.0 (ELv2), not Apache 2.0 for the main component [13]docs.langdb.ai/features/usage“LangDB enforces limits categorized into Daily Limits (maximum usage per day, e.g., $10 in the Starter Tier), Monthly Limits (total usage allowed in a month, e.g., $100), and Total Limits (cumulative limit over the project's duration, e.g., $500).”docs.langdb.ai/terms“The Services are not tailored to comply with industry-specific regulations (Health Insurance Portability and Accountability Act (HIPAA), Federal Information Security Management Act (FISMA), etc.), so if your interactions would be subjected to such laws, you may not use the Services.”github.com/langdb/ai-gateway“vLLora is fair-code distributed under the Elastic License 2.0 (ELv2). The inner package llm is distributed under the Apache License 2.0.”

• Docs
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.us-east-1.langdb.ai

Version

v1

Versioning

url

Stability

ga

Auth methods

api_key

Error format

openai-compatible

SDKs

• Python pylangdb · repo
• TypeScript/Node.js @langdb/vercel-provider · repo
• Rust (self-hosted gateway) ai-gateway (crates.io) · repo

• Auth docs
• Quickstart

Launched

2022-01-01

• Vercel AI Gateway

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  Usage · free tier · public pricing · self-serve

• Portkey

  "Production Stack for Gen AI Builders"

  Hybrid · free tier · public pricing · self-serve

• Bifrost (Maxim AI)

  "The fastest, most resilient, enterprise-grade LLM, MCP, and agent gateway."

  Sales-led · free tier · public pricing · self-serve

• Cloudflare AI Gateway

  "Connect to any model, dynamically route requests, and manage usage, billing, and logs from one unified gateway."

  Hybrid · free tier · public pricing · self-serve

• TrueFoundry AI Gateway

  "A unified AI gateway to securely manage and govern AI across 1600+ models with policy control, real-time monitoring, and up to 30% cost reduction."

  Hybrid · free tier · public pricing · self-serve

• Helicone

  "Open-source LLM observability and monitoring platform for developers" - routes, debugs, and analyzes AI applications with access to 100+ models through one API with built-in observability, automatic fallbacks, and zero markup pricing.

  Hybrid · free tier · public pricing · self-serve

LangDB alternatives · LangDB vs Vercel AI Gateway · All AI Gateway & LLM Routing APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: langdb.ai · langdb.ai
2. ↑Pricing model: sourceforge.net · langdb.ai
3. ↑Free tier: sourceforge.net · langdb.ai
4. ↑Free tier details: github.com · blog.langdb.ai
5. ↑Enterprise plan: docs.langdb.ai
6. ↑Supported actions: docs.langdb.ai · docs.langdb.ai
7. ↑Regions: docs.langdb.ai · docs.crewai.com
8. ↑SDK languages: pypi.org · ai-sdk.dev
9. ↑MCP server: langdb.ai · blog.langdb.ai
10. ↑HIPAA: docs.langdb.ai
11. ↑GDPR: langdb.ai
12. ↑Published SLA: docs.langdb.ai
13. ↑Known restrictions: docs.langdb.ai · docs.langdb.ai · github.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-21 Capabilities: {} → {"guardrails":true,"observability":true,"spend_controls":true,"fallback_routing…
2. 2026-06-21 Summary Md: (none) → LangDB is an AI gateway that provides multi-provider LLM routing, observability…
3. 2026-06-21 Score Procurement Friction: (none) → 90
4. 2026-06-21 Score Trust Readiness: (none) → 15
5. 2026-06-21 Best For: (none) → Prototypes and side projects - free to start, no sales call, AI agents and auto…
6. 2026-06-21 Avoid If: (none) → You have strict compliance requirements
7. 2026-06-21 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
8. 2026-06-21 Score Agent Friendliness: (none) → 40
9. 2026-06-21 Score Pricing Transparency: (none) → 75
10. 2026-06-21 Score Setup Speed: (none) → 85
11. 2026-06-21 Score Docs Quality: (none) → 15
12. 2026-06-21 Llms Txt Present: (none) → No
13. 2026-06-21 Has Structured Data: (none) → Yes
14. 2026-06-21 Robots Allows Agents: (none) → No
15. 2026-06-21 Status Page URL: (none) → https://status.langdb.ai
16. 2026-06-21 Docs URL: (none) → https://docs.langdb.ai/
17. 2026-06-21 Rendering: (none) → static
18. 2026-06-21 Has Published Pricing: set to Yes
19. 2026-06-21 Free Tier Available: set to Yes
20. 2026-06-21 Free Tier Details: set to Free cloud tier available at app.langdb.ai; paid tiers start at $49/month. A 7-…
21. 2026-06-21 Self Serve Signup: set to Yes
22. 2026-06-21 Requires Sales Call: set to No
23. 2026-06-21 Enterprise Plan Available: set to Yes
24. 2026-06-21 HIPAA: set to No
25. 2026-06-21 GDPR: set to Yes
26. 2026-06-21 SLA Published: set to No
27. 2026-06-21 Data Retention Policy URL: set to https://docs.langdb.ai/enterprise/resources/configuring-data-retention
28. 2026-06-21 Known Restrictions: set to Guardrails available in paid tiers only, Cost control features (budgets, per-us…
29. 2026-06-21 Auth Methods: set to api_key
30. 2026-06-21 Auth Docs URL: set to https://docs.langdb.ai/getting-started/working-with-api/
31. 2026-06-21 Base URL: set to https://api.us-east-1.langdb.ai
32. 2026-06-21 API Version: set to v1
33. 2026-06-21 Versioning Scheme: set to url
34. 2026-06-21 Stability: set to ga
35. 2026-06-21 Quickstart URL: set to https://docs.langdb.ai/getting-started/quick-start
36. 2026-06-21 Error Format: set to openai-compatible
37. 2026-06-21 Free Tier Limit: set to open-source self-host (Apache 2.0); cloud hosted gateway with free trial availa…
38. 2026-06-21 Slug: set to langdb
39. 2026-06-21 Notable Customers: set to (none)
40. 2026-06-21 Fields Not Found: set to soc2, iso_27001, pci_dss, webhooks_supported, documented_rate_limits, sla_detai…
41. 2026-06-21 Source Confidence: set to high
42. 2026-06-21 Extractor: set to claude-subagent:sonnet
43. 2026-06-21 Last Verified At: set to 2026-06-21T00:00:00.000Z
44. 2026-06-21 Status: set to published
45. 2026-06-21 Launched At: set to 2022-01-01
46. 2026-06-21 Name: set to LangDB
47. 2026-06-21 Vendor ID: set to 43d23e4e-bcf3-4ce4-94aa-29d422019d74
48. 2026-06-21 Website URL: set to https://langdb.ai
49. 2026-06-21 Vendor Description: set to Debug your AI agents in real time.
50. 2026-06-21 Primary Use Cases: set to multi-provider LLM routing and fallback, cost optimization and spend governance…

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/langdb \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/langdb/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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