Overview

Rating

10.0 / 10

Rating

Best For

Developers and AI product teams routing traffic across many LLM providers who want per-request model selection without token markup

Best For

AI engineering teams building production LLM applications who need unified access, observability, and cost control

Product Summary

OrcaRouter is an OpenAI-compatible LLM router that picks a model per request across 200+ models, with zero token markup on pay-as-you-go.

Product Summary

Respan is the AI router with built-in observability and automated evals: one API for 1,000+ models, with tracing, spend control, and evals on every request.

Starting Price

Free

Starting Price

Free Trial

Yes

Free Version

Yes

Free Version

Yes

Website

orcarouter.ai

Website

respan.ai

Key features

Core capabilities each platform advertises.

OrcaRouter

orcarouter/auto adaptive routing per request
Automatic failover chains across providers
Routing rules as code in YAML and CEL
Guardrails for PII, secrets, jailbreaks, and prompt injection

Respan

One API for 1,000+ models
Automatic fallbacks and retries
Load balancing across providers and models
Exact-match caching with configurable TTL
Hard spend limits per key, per customer, or org-wide
Task-aware model routing with Respan Router (beta)
Tracing, evals, and prompt management on every routed request

Strengths and tradeoffs

What each tool does well, and the limitations to keep in mind.

OrcaRouter

Pros

No token markup on pay-as-you-go top-ups and credit subscriptions
Per-request adaptive routing is included on the free tier
Prompt and response logging is off by default

Cons

No dataset or experiment-based evals, so quality tracking needs another tool
BYOK traffic may carry a platform fee, per the pricing page
The data region setting tags compliance reports but doesn't yet pin where data is stored or processed

Respan

Pros

Gateway, tracing, and evals in one platform, so every metric ties back to the request behind it
1,000+ models through one OpenAI-compatible API
No processing fee on Respan credits, and provider discounts are passed straight through
Hard spend caps that block requests, not just alert
Unlimited seats on the free plan
SOC 2, HIPAA with a BAA, GDPR, and ISO 27001

OrcaRouter or Respan — which should you choose?

Choose OrcaRouter if you wantChoose if you want

Cutting inference spend by routing routine prompts to cheaper models
Replacing a marked-up model marketplace with provider-rate billing
Guarding agent tool and MCP calls before they execute

Choose Respan if you wantChoose if you want

Keeping agents online through provider outages and rate limits
Controlling LLM spend per customer or API key
Switching models without code changes
Scoring output quality on live production traffic
Replacing a separate gateway, logging tool, and eval tool with one platform

Cons

Additional latency (30-40ms) from routing through a gateway layer
Newer platform with smaller community compared to established tools
Some advanced provider-specific features may not be fully supported

OrcaRouter vs Respan (2026)

Overview

Key features

Strengths and tradeoffs

OrcaRouter or Respan — which should you choose?

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