# LiteLLM vs OpenRouter: which do AI models recommend for LLM gateways, October 2026

IT AI Recommendation Index, October 2026 Edition, LLM gateways and observability. Two of fourteen models named LiteLLM first on the direct prompt; one named OpenRouter. Page: https://it-ai-index.com/it-data/llm-gateways-and-observability/litellm-vs-openrouter/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| LiteLLM | 31% | #1 of 8 | 16% | 58 | 14 of 14 |
| OpenRouter | 9% | #3 of 8 | 17% | 42 | 14 of 14 |

## The direct prompt, model by model

- GPT-5.4 mini: litellm first (first choices: LiteLLM) (alternatives: Portkey)
- Gemini 3.5 Flash: litellm first (first choices: LiteLLM) (alternatives: Bifrost, Cloudflare AI Gateway, Portkey)
- GLM 4.7 FlashX: openrouter first (first choices: OpenRouter, Portkey) (alternatives: Kong AI Gateway, LiteLLM)
- Claude Haiku 4.5: neither first, one named (first choices: Portkey) (alternatives: Bifrost, LiteLLM, Nexos.ai, OpenRouter)
- Perplexity Sonar: neither first, one named (first choices: Portkey) (alternatives: Bifrost, LiteLLM)
- Grok 4.1 Fast: neither first, one named (first choices: Portkey AI Gateway) (alternatives: Bifrost, Cloudflare AI Gateway, LiteLLM)
- DeepSeek V4 Flash: neither first, one named (first choices: Portkey) (alternatives: Helicone, LiteLLM, OpenRouter)
- Qwen 3.7 Flash: neither first, one named (first choices: Portkey) (alternatives: Amazon Bedrock, Azure AI, LiteLLM)
- Kimi K2: neither first, one named (first choices: Portkey) (alternatives: Cloudflare AI Gateway, Kong AI Gateway, LiteLLM)
- GPT-6 Luna: neither first, one named (first choices: Portkey, now branded PRISMA AIRS AI Gateway) (alternatives: Cloudflare AI Gateway, LiteLLM)
- Muse Glimmer 30B: neither first, one named (first choices: Portkey) (alternatives: LiteLLM, OpenRouter)
- Mistral Small: neither named (first choices: Nexos.ai) (alternatives: Cloudflare AI Gateway)
- Llama 4 Maverick: neither named
- MiniMax M2.5: neither named (first choices: Helicone, Portkey.ai) (alternatives: Cloudflare AI Gateway, Kong AI Gateway)

## What the models said about LiteLLM

- "High Caution/Avoid if Possible: LiteLLM (especially older/self-hosted versions): Suffered a major supply chain attack" (Grok 4.1 Fast, negative prompt, hard negative)
- "Avoid:
- LiteLLM in its current state (until security issues are fully resolved)" (Kimi K2, negative prompt, hard negative)
- "Avoid LiteLLM unless you have dedicated security engineering" (DeepSeek V4 Flash, negative prompt, hard negative)
- "For the most budget-conscious, LiteLLM (free, open-source) and OpenRouter (low-fee pay-as-you-go) are top choices." (Mistral Small, budget prompt, first choice)
- "If you are a Platform Engineer: Use LiteLLM. It allows you to standardize on one API key for the whole company" (GLM 4.7 FlashX, comparative prompt, first choice)
- "If your engineering team is already familiar with Docker and prefers open-source, deploy LiteLLM + Langfuse." (Gemini 3.5 Flash, paraphrase prompt, first choice)

## What the models said about OpenRouter

- "It is considered a high-risk option for data residency as its default catalog includes Chinese-hosted models." (Llama 4 Maverick, negative prompt, hard negative)
- "avoid OpenRouter for anything with sensitive/PII data" (DeepSeek V4 Flash, negative prompt, hard negative)
- "OpenRouter, for confidential or regulated prompts: Not a blanket "avoid," but check both the gateway settings and the selected model provider." (GPT-6 Luna, negative prompt, soft negative)
- "For most mid‑market B2B companies, I’d start with OpenRouter or Portkey to get a managed gateway quickly" (GLM 4.7 FlashX, direct prompt, first choice)
- "Start with OpenRouter. It is the easiest way to get access to multiple models with zero setup." (GLM 4.7 FlashX, budget prompt, first choice)
- "and OpenRouter if you want the lowest-ops path with immediate access to many models" (Perplexity Sonar, budget prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.