Predictable pricing for
Autonomous AI Agents.
Drop our single URL into your stack. Snell cuts 70% to 94% of your inference bill with certified tool-calling invariants and session cache preservation.
Hacker
Free ForeverPerfect for prototypes, indie side projects, and local agent development.
Includes
- 5M tokens / month routed
- 1 Active Project API Key
- Full 420+ Live Model Matrix
- Community Failover Cascade
Pro
Self-FundingFor production apps, autonomous agents, and teams spending $200–$5k/mo on LLMs.
+$0.05 / 1M tokens overage (never throttled)
Everything in Hacker, plus:
- 50M tokens / month included
- Semantic AST Classifier (Coding & Logic)
- BFCL Agentic Invariant Guard
- Session Affinity (`x-session-id`)
- Prompt Caching Discount Capture (up to 90%)
- Live FinOps Savings Ticker
Scale & Swarms
High ThroughputFor high-volume multi-agent swarms, RAG pipelines, and enterprise automation.
+$0.04 / 1M tokens volume overage
Everything in Pro, plus:
- 300M tokens / month included
- Sub-20ms Edge Routing Gateway
- Custom Provider Policies (EU-only, Ban Provider)
- Custom Multi-Tier Fallback Cascades
- Zero-Knowledge SOC2-Ready Logs & Webhooks
- Priority Slack/Discord Channel Bridge
Why Autonomous Agents Never “Forget” on Snell.
Engineers often ask: “If you route prompts to different models, won't my agent forget its context or bust its prompt cache?” Here is the architectural guarantee that keeps agent state 100% coherent:
Session Affinity (Sticky Thread)
Pass -H “x-session-id: agent_123”. Snell pins the continuous multi-turn thread to the same model, preserving up to 90% provider prompt-caching discounts and eliminating persona drift.
Sub-Agent Leaf Routing
80% of agent compute is spent on isolated sub-tasks (grepping code, parsing JSON, summarizing tools). Snell routes these leaf calls to sub-cent utility models ($0.07/1M) without touching the parent agent context.
BFCL Tool Schema Invariant
When a request contains tools or strict JSON schema, Snell strictly gates execution. It will never route to models with BFCL < 60, guaranteeing zero schema argument hallucination.
Calculate Your Exact Net ROI
See how much profit Snell puts back into your business every month.
Frequently Asked Questions
How fast is the routing latency?
Snell runs a zero-network in-memory AST classifier that resolves optimal routing and capability validation in under 0.3 milliseconds. The proxy introduces effectively zero overhead to your inference stream.
Do I bring my own API keys (BYOK)?
Yes. You can either pass your own OpenRouter / Provider keys or use Snell's unified managed keys. Your keys remain strictly encrypted in your environment and are never stored or inspected.
What happens if my token usage exceeds the plan limit?
Your application is never throttled or cut off. On the Pro plan, extra volume is billed at a transparent $0.05 per 1 million tokens routed, billed at the end of the monthly cycle.
How difficult is migration?
It takes 90 seconds. Change one environment variable in your codebase: OPENAI_BASE_URL="https://model.delights.pro/api/v1" and set your model to "snell/auto".