The AI landscape in 2026 is fragmented across dozens of model providers — OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, and many more. Each has its own API, SDK, pricing, and rate limits. Managing all of these directly is a maintenance nightmare. That is why AI API gateways have become essential infrastructure for any team building production AI applications.
In this article, we compare the top 7 AI API gateways in 2026, with real pricing numbers, feature breakdowns, and SDK compatibility analysis. Whether you are looking for the cheapest option, the fastest, or the most feature-rich, this guide will help you choose.
New to the concept? Start with our Complete Guide: What is an AI API Gateway?
Table of Contents
- What Makes a Great AI API Gateway?
- Top 7 AI API Gateways Reviewed
- Feature Comparison Table
- Pricing Comparison
- How to Choose the Right Gateway
- FAQ
What Makes a Great AI API Gateway?
Before diving into specific products, let’s define the criteria that separate a great AI gateway from a mediocre one:
1. Model Coverage
How many models are available? Does the catalog include both proprietary models (GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro) and open-source models (Llama, Mistral, DeepSeek)? Is the catalog updated quickly when new models are released?
2. SDK Compatibility
Can you use your existing SDKs without modification? At minimum, the gateway should be a drop-in replacement for the OpenAI Python/JavaScript SDK. Bonus points for Anthropic SDK compatibility and support for the newer /v1/responses format.
3. Pricing Transparency
Is pricing clear and predictable? Are you paying per-token at provider rates, or is there a markup? Are there subscription fees, minimum commitments, or hidden costs?
4. Performance & Latency
How much overhead does the gateway add? A Go-based backend (like Bring AI) can add less than 200ms. Node.js or Python-based gateways typically add more.
5. Reliability Features
Does it offer automatic fallback, retries, and load balancing across providers? What happens when a provider goes down?
6. Payment Flexibility
Can you pay with credit card, bank transfer, QRIS, or cryptocurrency? This matters especially for developers outside the US/EU.
7. Developer Experience
How easy is it to get started? Are the docs good? Is there a dashboard for monitoring usage and costs?
8. Deployment Options
Is it cloud-managed, self-hosted, or both? Self-hosting gives you control but requires infrastructure management.
Top 7 AI API Gateways Reviewed
1. Bring AI
Bring AI is a high-performance AI API gateway built with a Go-based backend for minimal latency. It offers 200+ models from all major providers and is fully compatible with both the OpenAI and Anthropic SDKs — one of the few gateways supporting both natively.
Standout features:
- Three API formats:
/v1/chat/completions(OpenAI),/v1/messages(Anthropic),/v1/responses - Less than 200ms routing overhead thanks to the Go backend
- Pay-per-use USD pricing with no subscription fee
- QRIS + cryptocurrency payment support (great for developers in Southeast Asia and globally)
- Drop-in compatible with
openaiandanthropicPython/JS SDKs
Pricing: Pay-per-use. You pay per-token rates that are competitive with or slightly above provider direct pricing. No subscription required. See Bring AI pricing.
Best for: Developers who want speed, dual SDK compatibility, and flexible payment options including crypto.
Check available models → Bring AI model catalog
2. OpenRouter
OpenRouter is one of the most well-known AI gateways, providing a unified interface to hundreds of models from major and niche providers. It is particularly popular for quick prototyping and accessing a wide variety of models through a single API.
Standout features:
- 300+ models from 50+ providers
- OpenAI-compatible API
- Large community and ecosystem
- Model ranking and popularity metrics
Pricing: Pay-per-use with a small markup (typically 5%) on top of provider prices. Credit card payment only.
Best for: Quick prototyping and accessing niche models.
Looking for an alternative? Read our OpenRouter alternatives guide.
3. LiteLLM
LiteLLM is the most popular open-source AI gateway, with over 57,000 GitHub stars. It can be self-hosted for free or used as a managed cloud service. LiteLLM provides a proxy server that translates OpenAI-format calls to 100+ different provider APIs.
Standout features:
- Open-source (Apache 2.0 license)
- 57K+ GitHub stars — large community
- Self-hosted option means no per-token markup (you pay provider prices directly)
- Supports 100+ LLM providers
- Python-based proxy server
Pricing: Free if self-hosted (you pay provider prices directly). Managed cloud service has subscription pricing.
Best for: Teams that want to self-host, avoid markups, and have full control over infrastructure.
4. Portkey
Portkey is an AI gateway focused on reliability and observability. With 12,800 GitHub stars, it provides advanced features like prompt management, guardrails, semantic caching, and detailed analytics. Portkey supports 1600+ models and offers both cloud and self-hosted options.
Standout features:
- 1600+ models supported
- Prompt management and versioning
- Guardrails for content filtering
- Semantic caching (reduce costs by caching similar requests)
- Detailed observability dashboard
- Both cloud and self-hosted options
Pricing: Subscription-based pricing starting at $49/month for the cloud version, plus usage. Self-hosted is free but requires infrastructure.
Best for: Enterprise teams needing observability, guardrails, and prompt management.
5. Together AI
Together AI brands itself as the “AI Native Cloud” — a platform that combines an API gateway with fine-tuning capabilities and dedicated endpoints. It is particularly strong for teams that want to fine-tune open-source models and serve them at scale.
Standout features:
- Fine-tuning capabilities for open-source models (Llama, Mistral, etc.)
- Dedicated endpoints for high-throughput use cases
- AI Native Cloud platform with end-to-end ML lifecycle
- Strong focus on open-source models
Pricing: Pay-per-use. Open-source models are very affordable (e.g. Llama 3.1 8B at $0.18/M input tokens). Fine-tuning and dedicated endpoints have separate pricing.
Best for: Teams fine-tuning open-source models and needing dedicated inference capacity.
6. Fireworks AI
Fireworks AI positions itself as “Specialized Intelligence” — a platform focused on fast inference of open-source models and specialized/fine-tuned models. It is known for its high-performance serving infrastructure.
Standout features:
- Ultra-fast inference for open-source models
- Fine-tuning and custom model deployment
- Specialized models for specific tasks (code, vision, etc.)
- Focus on speed and throughput
Pricing: Pay-per-use. Open-source models are competitively priced. Fine-tuned and specialized models have custom pricing.
Best for: Teams needing ultra-fast inference of open-source or fine-tuned models.
7. Novita AI
Novita AI provides “one API for 200+ models” — a gateway focused on simplicity and broad model coverage. It offers an OpenAI-compatible API and targets developers who want a straightforward, no-frills gateway.
Standout features:
- 200+ models through one API
- OpenAI-compatible interface
- Simple, straightforward setup
- Focus on ease of use
Pricing: Pay-per-use with competitive rates on open-source models. Proprietary models have standard provider pricing.
Best for: Developers who want simplicity and broad model coverage without complex configuration.
Feature Comparison Table
| Feature | Bring AI | OpenRouter | LiteLLM | Portkey | Together AI | Fireworks AI | Novita AI |
|---|---|---|---|---|---|---|---|
| Backend | Go | Node.js | Python | TypeScript | Custom | Custom | Custom |
| Models | 200+ | 300+ | 100+ | 1600+ | 200+ (OSS focus) | 100+ (OSS focus) | 200+ |
| OpenAI SDK | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Anthropic SDK | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| Self-Hosted | ❌ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| Streaming | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Fallback | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ✅ |
| Load Balancing | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ✅ |
| Semantic Cache | ❌ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| Guardrails | ❌ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| Fine-Tuning | ❌ | ❌ | ❌ | ❌ | ✅ | ✅ | ❌ |
| Routing Overhead | <200ms | ~300ms | Varies | Varies | N/A | N/A | Varies |
| Payment: USD | ✅ | ✅ | N/A | ✅ | ✅ | ✅ | ✅ |
| Payment: Crypto | ✅ | ❌ | N/A | ❌ | ❌ | ❌ | ❌ |
| Payment: QRIS | ✅ | ❌ | N/A | ❌ | ❌ | ❌ | ❌ |
| Open Source | ❌ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| GitHub Stars | — | — | 57K+ | 12.8K+ | — | — | — |
Pricing Comparison
Pricing is one of the most important factors when choosing a gateway. Below is a comparison of per-million-token pricing for popular models. Note that gateway prices include any markup; self-hosted options (like LiteLLM) charge provider prices directly.
Per-Million-Token Pricing (Input / Output)
| Model | Bring AI | OpenRouter | LiteLLM (self-hosted) | Portkey | Together AI | Fireworks AI | Novita AI |
|---|---|---|---|---|---|---|---|
| GPT-4o | $2.50 / $10.00 | $2.63 / $10.50 | $2.50 / $10.00 | $2.50 / $10.00 | N/A | N/A | $2.50 / $10.00 |
| Claude 3.5 Sonnet | $3.00 / $15.00 | $3.15 / $15.75 | $3.00 / $15.00 | $3.00 / $15.00 | N/A | N/A | N/A |
| Llama 3.1 70B | $0.59 / $0.79 | $0.62 / $0.83 | $0.59 / $0.79 | $0.59 / $0.79 | $0.88 / $0.88 | $0.90 / $0.90 | $0.55 / $0.79 |
| Llama 3.1 8B | $0.05 / $0.08 | $0.05 / $0.08 | $0.05 / $0.08 | $0.05 / $0.08 | $0.18 / $0.18 | $0.20 / $0.20 | $0.05 / $0.08 |
| Mistral Large | $2.00 / $6.00 | $2.10 / $6.30 | $2.00 / $6.00 | $2.00 / $6.00 | N/A | N/A | $2.00 / $6.00 |
| Gemini 1.5 Pro | $1.25 / $5.00 | $1.31 / $5.25 | $1.25 / $5.00 | $1.25 / $5.00 | N/A | N/A | $1.25 / $5.00 |
| DeepSeek V3 | $0.14 / $0.28 | $0.15 / $0.29 | $0.14 / $0.28 | $0.14 / $0.28 | N/A | N/A | $0.14 / $0.28 |
Note: Prices are approximate as of January 2026 and may change. OpenRouter typically adds a ~5% markup. LiteLLM self-hosted charges provider prices directly (no markup). Portkey cloud adds its subscription fee ($49/mo+) on top of provider prices. Together AI and Fireworks AI focus on open-source models and do not offer proprietary models like GPT-4o or Claude.
Additional Cost Considerations
| Gateway | Subscription Fee | Markup | Min. Commitment | Payment Methods |
|---|---|---|---|---|
| Bring AI | None | Minimal | None | USD, QRIS, Crypto |
| OpenRouter | None | ~5% | None | Credit Card |
| LiteLLM (self-hosted) | None | None | None | N/A (pay providers) |
| Portkey | $49/mo+ | None | None | Credit Card |
| Together AI | None | Included | None | Credit Card |
| Fireworks AI | None | Included | None | Credit Card |
| Novita AI | None | Minimal | None | Credit Card |
Cost Example: 10M Input + 5M Output Tokens (GPT-4o)
| Gateway | Cost |
|---|---|
| Bring AI | $25 + $50 = $75.00 |
| OpenRouter | $26.25 + $52.50 = $78.75 |
| LiteLLM (self-hosted) | $25 + $50 = $75.00 |
| Portkey | $25 + $50 + $49 = $124.00 |
| Novita AI | $25 + $50 = $75.00 |
For proprietary models like GPT-4o, Bring AI and LiteLLM (self-hosted) are the most cost-effective. Bring AI wins on convenience (no infrastructure to manage), while LiteLLM wins on control (self-hosted). OpenRouter adds a 5% markup, and Portkey’s subscription fee makes it more expensive at lower volumes.
How to Choose the Right Gateway
Choose Bring AI if:
- You want the fastest routing (<200ms overhead, Go backend)
- You need both OpenAI and Anthropic SDK compatibility
- You want crypto or QRIS payment options
- You want pay-per-use pricing with no subscription
- You are building a production application that needs reliability
→ Get started with Bring AI | View pricing
Choose OpenRouter if:
- You want quick access to a wide variety of models
- You are prototyping and want to experiment with many providers
- You do not need Anthropic SDK compatibility
- Credit card payment works for you
Choose LiteLLM if:
- You want to self-host and have full control
- You want to avoid per-token markups entirely
- You have infrastructure expertise to manage a Python proxy
- You are comfortable with the open-source community model
Choose Portkey if:
- You need enterprise-grade observability and monitoring
- You want guardrails and content filtering
- You need prompt management and versioning
- You want semantic caching to reduce costs
Choose Together AI if:
- You want to fine-tune open-source models
- You need dedicated inference endpoints
- Your primary use case is open-source models (Llama, Mistral)
Choose Fireworks AI if:
- You need ultra-fast inference of open-source models
- You are deploying fine-tuned or specialized models
- Speed and throughput are your top priorities
Choose Novita AI if:
- You want simplicity and broad model coverage
- You need an OpenAI-compatible API with minimal setup
- You are looking for competitive open-source model pricing
FAQ
What is the best AI API gateway in 2026?
The “best” gateway depends on your needs. For overall performance, SDK compatibility, and payment flexibility, Bring AI is an excellent choice with its Go-based backend, dual SDK support, and crypto payment options. For self-hosting, LiteLLM is the top open-source option. For enterprise observability, Portkey leads. For open-source model fine-tuning, Together AI and Fireworks AI are strong. Read our full comparison above.
What is the cheapest AI API gateway?
If you self-host LiteLLM, there is no markup — you pay provider prices directly (just the cost of your servers). Among managed gateways, Bring AI and Novita AI offer competitive pay-per-use pricing with no subscription fee. OpenRouter adds a ~5% markup. Portkey requires a $49/month subscription, making it more expensive at low volumes.
Can I use an AI gateway with the OpenAI SDK?
Yes. All seven gateways reviewed here are compatible with the OpenAI SDK. You typically change the base_url to the gateway’s endpoint and use the gateway’s API key. With Bring AI, for example:
from openai import OpenAI
client = OpenAI(api_key="bring-key", base_url="https://bring.buatjalan.xyz/v1")See our complete guide for more code examples.
Can I use an AI gateway with the Anthropic SDK?
Not all gateways support the Anthropic SDK. Bring AI, LiteLLM, and Portkey support the Anthropic /v1/messages endpoint natively. OpenRouter, Together AI, Fireworks AI, and Novita AI do not offer native Anthropic SDK compatibility.
Do AI gateways add latency?
Yes, but the amount varies. Bring AI adds less than 200ms thanks to its Go-based backend. Node.js-based gateways (like OpenRouter) typically add ~300ms. Python-based gateways (like LiteLLM) vary depending on the deployment. For most applications, this overhead is imperceptible compared to the LLM’s own response time.
Can I pay with cryptocurrency?
Bring AI supports cryptocurrency payments, making it accessible to developers worldwide. It also supports QRIS (for Indonesian users) and standard USD billing. Other gateways in this comparison primarily support credit card payments.
Which AI gateway supports the most models?
Portkey claims 1600+ models, the most in this comparison. OpenRouter offers 300+ models. Bring AI and Novita AI both offer 200+ models. Together AI and Fireworks AI focus on open-source models with 100-200 options. LiteLLM supports 100+ providers (self-hosted).
Should I self-host or use a managed gateway?
Self-host (LiteLLM, Portkey) if you want full control, no markup, and have infrastructure expertise. Use a managed gateway (Bring AI, OpenRouter, Novita AI) if you want zero infrastructure management, automatic updates, and built-in reliability features. Most teams start with a managed gateway and switch to self-hosting only when they have specific compliance or cost requirements.
Looking for an OpenRouter alternative?
If you are currently using OpenRouter and want to switch, check out our OpenRouter alternatives guide with a step-by-step migration guide and code examples.
Conclusion
The AI API gateway market in 2026 is mature and competitive. Here is our quick recommendation:
- Best overall for speed & flexibility: Bring AI — Go backend, dual SDK, crypto payments
- Best for self-hosting: LiteLLM — open-source, 57K stars, no markup
- Best for enterprise: Portkey — observability, guardrails, prompt management
- Best for fine-tuning: Together AI — AI Native Cloud with fine-tuning
- Best for fast OSS inference: Fireworks AI — specialized intelligence
- Best for simplicity: Novita AI — one API, 200+ models
- Best for model variety: OpenRouter — 300+ models, unified interface
Ready to try Bring AI? Check pricing, browse models, or read the docs to get started in minutes.
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