Criterion GroqCloud OpenRouter
CategoryInference & Model HostingLLM APIs & Model Platforms
In one sentenceLow-latency inference API for open models running on Groq's LPU hardware.One OpenAI-compatible API key for hundreds of models from many providers.
Problem it solvesGetting fast responses from open models for real-time apps without hosting them.Managing separate accounts, keys and SDKs for every model provider, and coping with provider outages.
Free planYesYes
Developer APIYes — docsYes — docs
Open sourceNoNo
PlatformsWeb (Groq console), REST APIWeb, REST API
Pricing (summary)Free plan with rate limits, then usage-based pricing per 1M tokens on the Developer plan. For example, openai/gpt-oss-120b is $0.15 input / $0.60 output and gpt-oss-20b $0.075 / $0.30; some models are contact-sales.
Checked 2026-10-19
No subscription: inference is billed at each provider's list price, with a platform fee of 5.5% (Standard) or 8% (Business) on credit purchases. A free plan offers 25+ free models with request caps; Enterprise is contract-based.
Checked 2026-10-19
Strengths
  • Speed-focused hardware
  • Free entry point
  • Simple per-token prices for gpt-oss models
  • Huge model catalogue
  • Provider list prices passed through
  • Free tier for testing
Limitations
  • Several models list pricing as 'Contact Sales'
  • Free-plan limits not published in docs
  • Preview models may be discontinued at short notice
  • 5.5% (Standard) or 8% (Business) fee on credit purchases
  • Free model caps are low
  • Another intermediary in the data path