OpenRouter is the largest unified LLM gateway and a fine product. We're not going to pretend otherwise. But if you've been weighing your options, here's an honest read on when InferAll is the better fit and when it isn't.
TL;DR
| OpenRouter | InferAll | |
|---|---|---|
| Free tier | Pay-as-you-go from cent one | Free no-card trial on 40+ NIM models |
| Provider markup | ~5-10% on most paid providers | 0% (provider's published rate) |
| Free open-source models | A few via partners | 40+ via NVIDIA NIM |
| Activation cost | $0 (deposit upfront) | $5 starter pack (becomes balance) |
| Auto-fallback | Yes (across providers) | Yes (within provider class) |
| OpenAI SDK passthrough | Yes | Yes |
| Anthropic SDK passthrough | Yes (via /v1/messages) |
Yes (via /v1/messages) |
When InferAll wins
You want to evaluate without depositing. OpenRouter requires a credit balance up-front. InferAll has a free trial on 40+ NIM open-source models. No payment until you're sure.
You're going to use Claude / GPT / Gemini directly. OpenRouter adds a small markup on premium providers. InferAll bills at the provider's published rate with zero markup — what Anthropic charges per token is what you pay, full stop. For high-volume Anthropic usage, this is real money.
You want to default to free NIM open models. Claude Code / OpenAI SDK / LangChain apps configured for InferAll default-route to NVIDIA NIM (Llama 3.1, Nemotron, Mixtral, etc.) at $0 in / $0 out. You can force a premium provider with a model="anthropic/claude-sonnet-4-6" prefix when you actually need it.
You only need 2-3 providers. InferAll wraps the 5-6 major ones (OpenAI, Anthropic, Google, NVIDIA NIM, Replicate, Runway, ElevenLabs). If that's all you need, the lower-markup and free-tier story is sharper.
When OpenRouter wins
You need long-tail providers. OpenRouter integrates 50+ providers including smaller players (Mistral, Cohere, Perplexity, DeepSeek's hosted endpoints, etc.) that InferAll doesn't currently route. If your stack relies on one of those, OpenRouter is the right answer.
You want per-call provider price comparison. OpenRouter shows real-time per-token pricing across providers and lets you route by price. InferAll's UX assumes you pick the model and we route to the canonical provider; price comparison happens once when you choose the model.
You want streaming credits / vouchers. OpenRouter has voucher integrations with some training providers. InferAll's primary acquisition is the $5 starter pack, which is simpler but less flexible.
When the difference doesn't matter
For most prototyping and indie projects, both will work. The decision usually comes down to:
- Do you want to pay up front (OpenRouter) or try free first (InferAll)?
- Are the providers you need in InferAll's set?
If both are yes / yes-equivalent, pick whichever has fewer signup steps in your jurisdiction. They're competitors but not mutually exclusive — many teams use both.
What we're working on
We're explicit that InferAll's smaller provider set is a deliberate tradeoff for the zero-markup billing story. We don't want to add a provider unless we can pass through its full quality without adding a routing tax. Recent additions: Replicate (Flux, minimax/video-01), ElevenLabs TTS. Recent improvements: faster fallback, the trial-status response headers, and a single /ai/v1/key/status endpoint that returns your trial counter + balance + 7-day savings.
If you're evaluating both, our docs cover the SDK setup paths in 60 seconds and the pricing page shows the full premium-provider rate table.