FlexAI

One OpenAI-compatible key for open-model inference, agents and private cloud

Advanced API
Screenshot of FlexAI, One OpenAI-compatible key for open-model inference, agents and private cloud

What is FlexAI?

FlexAI is a coding tool. FlexAI offers managed inference on 30+ open models through one OpenAI-compatible API key, with a growth path from serverless calls to agent governance, dedicated GPU endpoints and private cloud deployment.

FlexAI is a managed inference platform that serves more than 30 open-weight models through a single OpenAI-compatible API. The catalog spans text generation, coding, reasoning, vision, embeddings, speech-to-text, text-to-speech and image generation, with families from Qwen, Gemma, Llama, DeepSeek, GLM, Mistral and OpenAI's open GPT-OSS models. Existing code written for the OpenAI SDK can be pointed at the FlexAI endpoint and run unchanged, and the vendor states that leaving again is a configuration change. The product is organised as a path rather than a single service. Token Factory covers serverless model calls priced by usage. AgentOS is the layer for agent loops, where teams bring skills, tools, scoped memory, evals and approvals, and FlexAI runs them across models with routing, governance and audit trails. Dedicated Endpoints move the same API onto reserved GPUs, and AI Factory deploys the stack in a VPC, on-premises or air-gapped. Compute runs on FlexAI-operated NVIDIA and AMD fleets, with an uptime SLA of up to 99.9 percent, and the company lists SOC 2 Type II and GDPR compliance. In practice, a developer can try image generation and chat completions in an in-browser demo without an account, then sign up for an API key. Billing is pay as you go with no commitment beyond usage, though a card is required to create a key. Text models are charged per token, while media models are charged per image, per minute of audio or per generated clip, and dedicated capacity is billed per GPU-hour. FlexAI suits agent-focused product teams, startups that expect to outgrow serverless, and regulated organisations that need private deployment. Compared with model API providers such as Fireworks or hyperscaler services such as AWS Bedrock, its pitch is a single account that scales from serverless calls to private infrastructure. It is limited to open-weight models, so teams that depend on proprietary frontier models will still need another provider alongside it.

How do you use FlexAI?

  1. 1Try the in-browser demo
    Run an image prompt or a chat completion on the homepage demos to see model output and latency before creating any account.
    FlexAI — Try the in-browser demo
  2. 2Browse the model catalog
    Review the available open models and pick one that fits the task, such as a coding, reasoning, embedding or speech model.
    FlexAI — Browse the model catalog
  3. 3Create an account and API key
    Sign up for pay-as-you-go access. A card is needed to generate the API key, with no commitment beyond usage.
    FlexAI — Create an account and API key
  4. 4Point the OpenAI SDK at FlexAI
    Set the SDK base URL to https://api.flex.ai/v1, add the new key and choose a FlexAI model name. Existing request code should work unchanged.
  5. 5Explore agents and scaling options
    Review AgentOS for governed agent runs, then consider dedicated endpoints or private cloud as traffic and compliance needs grow.
    FlexAI — Explore agents and scaling options

Pros and cons

Pros

  • Drop-in OpenAI SDK compatibility lets existing code run by changing the base URLAI
  • Broad open-model catalog covering text, code, vision, embeddings, speech and imagesAI
  • Single account scales from serverless to dedicated GPUs and private cloudAI
  • In-browser demo allows testing image and chat models without signing upAI
  • Pay-as-you-go billing with no commitment, plus SOC 2 Type II and GDPR compliance listedAI

Cons

  • Only open-weight models are offered, so proprietary frontier models need another providerAI
  • A card is required to create an API key, even for light experimentationAI
  • Serverless rates are repriced as the market moves, which makes budgeting less predictableAI
  • The 99.9 percent SLA is stated as up to, and AgentOS is labelled as in trialAI

How much does FlexAI cost?

Free trial

The in-browser demo for image generation and chat is available without an account. A startup program offers credit to accepted startups. API keys require a card.

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Pricing

Pay as you go with no commitment beyond usage. Serverless is priced per token for text and per image, speech character, audio minute or video clip for media. Dedicated endpoints are billed per GPU-hour and AI Factory per deployment.

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Support

A public status page tracks uptime, and a security site covers compliance. A contact route exists for sales conversations.

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Integrations

Works with the OpenAI SDK by pointing it at https://api.flex.ai/v1. Runs on NVIDIA and AMD GPU fleets.

Features

30+ open models behind one OpenAI-compatible API, with tool calls, streaming, structured output and vision. AgentOS adds routing, approvals and audit trails. Dedicated endpoints, fine-tuning and private AI cloud (VPC, on-prem, air-gapped) are available.

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Frequently asked questions about FlexAI

  • How much does FlexAI cost?
    Pay as you go with no commitment beyond usage. Serverless is priced per token for text and per image, speech character, audio minute or video clip for media. Dedicated endpoints are billed per GPU-hour and AI Factory per deployment.
  • Does FlexAI offer a free trial?
    The in-browser demo for image generation and chat is available without an account. A startup program offers credit to accepted startups. API keys require a card.
  • Does FlexAI have an API?
    Yes, FlexAI offers an API.
  • How do you use FlexAI?
    The walkthrough on this page covers 5 steps: 1. Try the in-browser demo 2. Browse the model catalog 3. Create an account and API key 4. Point the OpenAI SDK at FlexAI 5. Explore agents and scaling options.
  • What platforms does FlexAI support?
    FlexAI is available on Web App.
  • What does FlexAI integrate with?
    Works with the OpenAI SDK by pointing it at https://api.flex.ai/v1. Runs on NVIDIA and AMD GPU fleets.

Status

StatusActive
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Added10/8/2026

Platforms

Web App

Pricing

Paid