"Multiplayer AI" — shared, governed company-wide agents across your stack.
Tool useMemoryRAGMulti-agent
Demo · hover to playLangdock vs Sierrawhich AI ops agent should you pick in 2026?
GDPR-native multi-model AI workspace with built-in agent builder — Europe's Glean alternative.
Tool useMemoryRAGMulti-agent
Langdock vs Sierra — specs
| Spec | Langdock | Sierra |
|---|---|---|
| Agent Rank | 77 / 100 (A) | 78 / 100 (A) |
| Autonomy | Semi-autonomous | Autonomous |
| Pricing | Subscription · from $30 | Subscription · Free tier |
| Open source | No | No |
| Capabilities | Tool use, Memory, RAG, Multi-agent | Voice, Tool use, Memory, RAG |
| Integrations | 5 apps | 3 apps |
| Verified | — | Verified |
| Released | Feb 2025 | Feb 2025 |
Agent Rank breakdown
Langdock
Agent Rank
77/ 100
- Autonomy
- 8
- Capabilities
- 8
- Integrations
- 10
- Pricing
- 7
- Polish
- 7
- Verifiability
- 6
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Sierra
Agent Rank
78/ 100
- Autonomy
- 9
- Capabilities
- 8
- Integrations
- 6
- Pricing
- 9
- Polish
- 5
- Verifiability
- 10
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Pros & cons
Langdock
Pros
- +GDPR-native — built EU-first with German data residency and strict compliance defaults
- +Multi-model BYO (Anthropic, OpenAI, Google) without lock-in
- +Strong agent builder + connector library — Glean-class but priced for European mid-market
Cons
- −Smaller US presence and US partner ecosystem
- −Newer than Glean — fewer published US Fortune 500 case studies
- −Per-seat pricing adds up at scale (>50 users)
Sierra
Pros
- +Best-in-class for branded customer-facing agents (voice + chat parity)
- +Concierge onboarding from one of the strongest teams in AI
- +Indistinguishable-from-human quality in tier-1 deployments
Cons
- −Enterprise-only pricing — typical contracts $150–500k/year
- −Deployment is white-glove, not SaaS — multi-week setup
- −Overkill for SMB or mid-market support volumes
Pricing
Langdock
Free
Free
Individuals
- +1 workspace
- +GPT-4o + Claude
- +Limited connectors
Recommended
Pro
$30/seat/mo
Teams
- +Multi-model BYO
- +All connectors
- +Agent builder
Enterprise
Custom
Large EU orgs
- +SSO + audit
- +Custom retention
- +Dedicated EU tenant
Sierra
Recommended
Branded agent
Custom
Enterprise
- +Voice + chat
- +Custom persona
- +White-glove implementation
- +SOC 2 II + HIPAA option
Which one should you pick?
Langdock
Pick Langdock if its specific capabilities (Tool use, Memory) match what you need.
Try Langdock →Sierra
Pick Sierra if cost is the main constraint or if you want the highest autonomy and the verification loop is in place.
Try Sierra →Affiliate links. We may earn a commission at no extra cost to you.
Frequently asked
Should I pick Langdock or Sierra in 2026?+
Pick Langdock if its specific capabilities (Tool use, Memory) match what you need. Pick Sierra if cost is the main constraint or if you want the highest autonomy and the verification loop is in place. Most working teams running both can use Langdock for primary work and Sierra for the workflows where its specific strengths matter.
What's the price difference between Langdock and Sierra?+
Langdock starts at Subscription · from $30; Sierra starts at Subscription · Free tier. Sierra is the cheaper entry option. For team deployments the TCO can differ — use the AI Agent Rank TCO calculator for your specific volume.
Which is more autonomous, Langdock or Sierra?+
Sierra is the more autonomous of the two (Autonomous vs Semi-autonomous). Higher autonomy ships throughput faster but requires verification loops in place — see our autonomous-vs-copilot framing for when each tier wins.
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See more alternatives: alternatives to Langdock · alternatives to Sierra
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