OpenRouter for Free: How to Access Various AI Models

Published: August 19, 2026 – 11:08 UTC

• What is known about the deal with Stripe

• How OpenRouter works

• How much does it cost, and how do I pay?

• Guide: how to use OpenRouter for free, without a card

• What to consider before buying credits

Article brief

Figure out what OpenRouter is, how the service works, and why you might need it. Provide an overview of key features, popular AI models, and ways to use OpenRouter for free, with clear step-by-step instructions. That was the goal of this article. Did we pull it off?

August 16, 2026 Bloomberg, citing sources, reported that payments company Stripe had agreed to buy AI startup OpenRouter for more than $7 billion. The parties have not officially confirmed the deal yet: a Stripe spokesperson said the company “does not comment on rumors and speculation,” while OpenRouter declined to comment. Earlier, on July 24, The Wall Street Journal wrote about the talks — at the time, the valuation discussed was around $10 billion.

For a startup founded in 2023, this is a sharp jump: in May 2026, OpenRouter raised $113 million in a Series B led by CapitalG (Alphabet’s fund) at a valuation of $1.3 billion. In just three months, the valuation rose more than fivefold.

OpenRouter is a cloud gateway to neural networks: one account, one API key, and one balance, backed by more than 500 models from 80+ providers — OpenAI, Google, Anthropic, Meta, DeepSeek, Qwen, and others. The service routes requests to the right provider, compares prices, and switches to a backup source if the primary one is unavailable.

The Incrypted editorial team broke down how OpenRouter works and how to start using the service without a bank card — via free models.

OpenRouter is a unified API gateway to more than 500 models from 80 providers: one key, one balance, automatic routing, and fallback across providers.
According to Bloomberg, Stripe has agreed to buy the company for more than $7 billion; in May, the valuation was $1.3 billion. There is no official confirmation yet.
The service processes more than 200 trillion tokens per month; its audience is over 10 million users.
Registration doesn’t require a card: OpenRouter offers free models with the :free suffix and the openrouter/free router — 20 requests per minute and 50 per day without topping up your balance, and 1,000 per day after a one-time top-up of $10 or more.

What We Know About the Stripe Deal

Bloomberg reports that the parties have agreed on Stripe acquiring OpenRouter for more than $7 billion, but the final price could still change. The talks were confidential, and there is no timeline for closing the deal. Over its lifetime, OpenRouter has raised more than $150 million in funding — with investors including Andreessen Horowitz, Menlo Ventures, Sequoia, CapitalG, NVentures (NVIDIA’s venture arm), as well as funds affiliated with ServiceNow, MongoDB, Snowflake, and Databricks.

Stripe, valued at $159 billion, has been actively expanding beyond acquiring in recent years: in 2025, it completed the acquisition of the stablecoin platform Bridge, and together with Paradigm launched the Tempo blockchain for stablecoin payments. Incrypted covered its testnet. The OpenRouter acquisition fits the same logic: Stripe wants to become infrastructure not only for money, but also for the AI requests that money pays for.

For OpenRouter users, the deal doesn’t change anything for now: the service is operating as usual, and there have been no public statements about integration plans.

How OpenRouter Works

Technically, OpenRouter is an OpenAI-compatible API at https://openrouter.ai/api/v1. Any app or library that can work with the OpenAI API can connect to it by swapping the base URL and the key. Models are addressed using the “author/model” scheme, for example openai/gpt-5.5 or google/gemini-3.7-flash, and suffixes define the variant: :free — the free version, :nitro — speed priority, :floor — lowest-price priority, :thinking — reasoning mode.

The service is scaling fast. In the Series B announcement in May, the company reported 25 trillion tokens per week (up from 5 trillion six months earlier), 8 million developers, and more than 400 models. By mid-August, the homepage already shows more than 500 models, 80 providers, 10 million users, and more than 200 trillion tokens per month. The public usage rankings also make OpenRouter a market barometer.

*The Rankings page with the top models by weekly tokens. Data:* *Openrouter*.

Local open-source gateways like OmniRoute solve a similar problem — one endpoint for all models.

The difference is that OmniRoute runs on the user’s computer and relies on their own subscriptions, while OpenRouter is a cloud service with a single prepaid balance.

How Much it Costs and How to Pay

OpenRouter doesn’t charge for a subscription — only for credits, which are deducted at providers’ rates. The service markup is 5.5% when topping up by card (minimum $0.80) and 5% when paying with cryptocurrency. Bank cards, AliPay, and USDC are accepted; the programmatic API for crypto payments via Coinbase Commerce is disabled, and USDC payments go through the web interface for buying credits. The service reserves the right to write off unused credits one year after purchase.

But you don’t need to pay anything at all to try the service. Next, we’ll show this scenario.

Guide: How to Use OpenRouter for Free, Without a Card

Step 1. Sign up

Open openrouter.ai and click “Sign in.” You can log in via Google, GitHub, email, or the MetaMask crypto wallet — no card details are requested at this stage. For new users, the service credits a small starter balance for testing, but it isn’t spent on free models.

*OpenRouter login window with a list of authorization methods. Source: Incrypted.*

Step 2. Find free models

All free models are collected in the Free Models collection; in the catalog, you can also filter them by a zero price. At the time of writing, the collection includes 15 models, including NVIDIA Nemotron 3 Ultra and Nemotron 3.5 Lightning with a 1 million-token context, the coding models Poolside Laguna S 2.1 and Cohere North Mini Code, the multimodal Google Gemma 4, and OpenAI gpt-oss-20b. The most in-demand among them is Nemotron 3 Ultra: 2.5 trillion tokens have gone through it.

The list changes every week: providers add free versions to promote new models and remove them without warning. That’s why in this article we don’t recommend a specific model, but a universal router, openrouter/free — it randomly selects an available free model that fits the request and returns which exact model was used in the response.

Step 3. Test models in chat

The Chat section is a web playground where you can connect multiple models to a single conversation and compare their answers side by side. Click “Add model,” choose two or three models labeled free, and send a prompt.

Prompt

Compare Ethereum and Solana as platforms for stablecoin payments: fees, finality, and ecosystem. Keep it under 150 words.

This makes it easy to evaluate which free model best fits your needs before connecting it via the API.

Result:

*OpenRouter chat with responses from two free models to the same prompt. Data: Incrypted.*

Step 4. Create an API key

In the left settings menu, select “API Keys.” Click “+ New Key,” set a name and, if you want, a spending limit in dollars (you won’t need it for free models, but it will protect you from accidental charges in the future). The key is shown only once — copy it right away.

*API Keys section with a created key. Data: Incrypted.*

Step 5. Send your first request via the API

You can test that it works with a single command in PowerShell on Windows. Replace it with your key.

$body = @{ model = "openrouter/free"; messages = @(@{ role = "user"; content = "Explain what a stablecoin depeg is in three sentences" }) } | ConvertTo-Json -Depth 5
$r = Invoke-RestMethod -Uri "https://openrouter.ai/api/v1/chat/completions" -Method Post -Headers @{ Authorization = "Bearer your_key" } -ContentType "application/json" -Body $body
$r.model
$r.choices[0].message.content

If you paste all four lines at once, Windows Terminal will show a multi-line paste warning — click “Paste anyway” and press Enter, or paste the lines one by one.

*Multi-line paste warning. Data: Incrypted.*

The model field in the response will show which free model the router selected.

*The router selected nvidia/nemotron-3-ultra-550b-a55b:free. Data: Incrypted.*

After running the last line, the response text will appear.

*Terminal with the API response. Data: Incrypted.*

Step 6. Keep an eye on the limits

The “Activity” section shows your request history, the models used, and providers. Free models have limits: 20 requests per minute and 50 per day per account. If you top up your balance by $10 at least once, the daily limit increases to 1,000 requests — while the free models remain free, and the $10 will be used for paid models as needed.

Things to Consider Before Buying Credits

OpenRouter is primarily useful for those who work with multiple AI models via API or through tools with a customizable base URL, such as Cursor. A single API key instead of a dozen accounts, a unified balance, and automatic fallback save time, while public rankings and pricing allow you to choose a model based on the task rather than habit.

However, there are a few limitations to keep in mind:

Strict limits. 50 requests per day is enough for testing and occasional tasks, but not for a daily workflow. A $10 top-up solves most of this problem, but it requires a bank card or USDC.

The list of free models is volatile. Models come and go, and response times slow down during peak hours. Furthermore, the openrouter/free router does not guarantee that the same model will be used from one request to the next.

Privacy depends on the provider. OpenRouter does not log requests by default; however, some free model providers may use your data for training. Permission to route requests to such providers is managed in your account’s privacy settings, with separate toggles for free and paid models. It is highly recommended to check these settings before sending sensitive data.

Flagship models are not available for free. The :free suffix is exclusive to open-source models.

Ultimately, the free tier is just a way to test the service and open-source models with no strings attached. For regular use, it makes more sense to top up your balance with $10 once: this increases your daily limit 20-fold and unlocks access to paid models at provider prices (with a 5.5% markup).

FAQ

OpenRouter is a cloud gateway to neural networks: one account, one API key, and one shared balance, backed by more than 500 models from over 80 providers, including OpenAI, Google, Anthropic, Meta, DeepSeek, and Qwen. The service automatically routes requests to the right provider, compares prices, and switches to a backup source if the primary one is unavailable. Technically, it is an OpenAI-compatible API, so any app or library that can work with the OpenAI API can connect by simply swapping the endpoint and the key. The point of the service is to avoid setting up a dozen separate accounts and subscriptions, and instead pay from a single balance and choose the best model for a specific task.

Yes. Registration does not require a bank card — you can sign in via Google, GitHub, email, or the MetaMask crypto wallet. After that, free models with the :free suffix and the universal openrouter/free router are available. Without topping up your balance, limits apply: 20 requests per minute and 50 per day per account. If you top up your balance once with $10, the daily limit increases to 1,000 requests, and the free models themselves will remain free. For getting to know the service and one-off tasks, the free mode is enough, but for regular work, 50 requests per day is already too little.

Yes — they are collected in the Free Models roundup, which had 15 models at the time of writing. These include NVIDIA Nemotron 3 Ultra and Nemotron 3.5 Lightning with a 1 million-token context, the coding models Poolside Laguna S 2.1 and Cohere North Mini Code, the multimodal Google Gemma 4, and OpenAI gpt-oss-20b. The list is unstable: providers add free versions to promote new models and remove them without warning, so it is more reliable to use the openrouter/free router — it will automatically pick an available model and show in the response which one actually ran. Important: the :free suffix exists only for open models; flagship models are not available for free.

Local open-source gateways, such as OmniRoute, solve the same problem — a single address for all models. The difference is that it runs on the user’s computer and relies on their own subscriptions, whereas OpenRouter remains a cloud service with a single prepaid balance. A simpler alternative is to connect directly to each provider’s API: this way you don’t pay the 5.5% markup, but you end up with a separate account, key, and balance for each service, and you lose automatic routing and fallback. If you just need to compare a few models without writing code, any web playground will do.

The service’s reputation is backed up by the numbers: more than 10 million people use it, over 200 trillion tokens pass through it each month, and in May 2026, its Series B round closed at a $1.3 billion valuation. In August, Bloomberg reported that Stripe had agreed to buy the company for more than $7 billion. The downsides we confirmed in our test include strict limits on the free tier, an unstable roster of free models, and slower responses during peak hours. A separate point is privacy: OpenRouter itself does not log requests by default, but some providers of free models may use data for training unless you disable routing to them in your account settings.

Сообщение OpenRouter for Free: How to Access Various AI Models появились сначала на INCRYPTED.

Source: Incrypted