Runapi.Ai
Runapi.Ai: one API for AI video, image, music, audio, and LLMs
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What is Runapi.Ai?
Runapi.Ai is a unified AI API platform that provides developers access to video, music, image, and LLM models through a single API key. The platform aggregates 28+ multimodal models across 17 providers including Kling for video generation, Suno for music creation, Flux for image generation, and LLMs like Claude, Gemini, and DeepSeek. Notably, RunAPI offers Suno API access which has no official API available elsewhere, making it a unique solution for music generation.
Runapi.Ai pricing
Pricing model: Freemium
RunAPI uses a credit-based pay-as-you-go system with no subscriptions, no hidden fees, and no minimums. You only pay for what you generate and credits never expire. New users get a free first 1,000 calls. Pricing varies by model category: Video generation (Kling, Hailuo, Seedance) costs from $0.020-$0.600 per second or $0.300 per call; Image generation (Flux, GPT Image 2, Nano Banana) costs from $0.040-$0.240 per call; Audio & Music (Suno, ElevenLabs) costs $0.040 per 1K chars; LLMs (Claude, GPT, Gemini) cost from $0.030-$0.050 per 1K tokens. Failed generations are not charged. Billing is per-call or per-unit metered, billed monthly in USD with unified billing across all providers.
Runapi.Ai pros
- Single API key for all 28+ AI models across 17 providers
- Unique Suno API access with no official API available elsewhere
- Kling video generation at up to 4K 60fps with multimodal audio
- Production-ready with async task management and webhook callbacks
- Automatic retries for transient failures
- Pay-as-you-go pricing with no subscriptions or hidden fees
- Credits never expire until used
- Official SDKs for Python, Node.js, Ruby, and Go
- REST API works with any HTTP client
- CLI client calls 100+ AI models with JSON-first interface
- Model skills work across 50+ AI agents including Claude Code and Codex
- Schema-first tool calls validate before the wire
- Failed generations are not charged
- Predictable credit-based billing with transparent pricing
- No minimum spend requirements
- New models added regularly to the catalog
- Unified billing across all providers
- SDK packages are MIT-licensed for self-hosting
- Free first 1,000 calls for new users
- Free account sign-up with API key from dashboard
Runapi.Ai cons
- No official subscription plans - only pay-as-you-go
- Credit system may be confusing for users familiar with token-based pricing
- Limited to cloud API - no self-hosted model option
- Dependent on third-party model providers for availability
- Schema validation adds complexity for simple requests
- CLI requires macOS or Linux (no Windows support)
- Some premium models like Veo 3.1 have high per-call costs at $0.600
- Async task polling required for all generations adding latency
- Webhook notifications needed for production workflows add setup complexity
- No volume discounts mentioned for high Usage
Frequently asked questions about Runapi.Ai
How do I get started with RunAPI?
Sign up for a free account, generate an API key from the dashboard, and make your first request. Most teams ship a working integration in under 10 minutes. New users get free first 1,000 calls to test the platform.
What AI models does RunAPI provide access to?
RunAPI provides access to video generation (Kling, Veo, Seedance, Hailuo, Runway), music generation (Suno, ElevenLabs), image generation (Flux, Seedream, GPT Image, Nano Banana, Ideogram), and LLMs (Claude, Gemini, DeepSeek, GPT). The platform aggregates 28 multimodal models across 17 providers and adds new models regularly.
How does RunAPI pricing work?
RunAPI uses a credit-based system with pay-as-you-go pricing. No subscriptions or hidden fees. You only pay for what you generate, and credits never expire. Pricing is per-call or per-unit metered, billed monthly in USD. Failed generations are not charged. There are no minimums required.
Do you offer SDKs for my programming language?
Yes. Official SDKs are available for Python, Node.js, Ruby, and Go. You can also use the REST API directly with any HTTP client. The CLI client works on macOS and Linux for amd64 and arm64 architectures. SDK packages on npm, pip and RubyGems are MIT-licensed.
What happens if a generation fails?
Failed generations are not charged. The system automatically retries transient failures, and you receive a webhook notification with the failure details. This ensures you only pay for successful outputs.
What is a model skill and how does it work?
A skill is a bundle of install, schema, prompt, and runtime adapter that any compatible CLI can pick up. One skill bundles install + docs + tool calls and works inside any agent loop including Claude Code, Codex CLI, Gemini CLI, or directly from npm/pip. The -g flag installs globally so every project picks it up.
Which AI agents support RunAPI skills?
Skills work with 50+ agents including Claude Code, Codex CLI, Gemini CLI, Cursor, and more. The one-command install pattern works across all these runtimes with the agent picking up the docs, schema, and runtime adapter automatically.
Do I need a separate account per provider?
No. One RunAPI key unlocks the whole catalog of 28 models across 17 providers. Billing is unified across all providers, so you get one monthly bill in USD instead of separate accounts and bills for each model provider.
Can I use RunAPI without SDKs?
Yes. You can use the REST API directly with any HTTP client. The API uses standard curl commands with Authorization bearer tokens and JSON request bodies. This makes RunAPI accessible from any programming language or tool that can make HTTP requests.
How do I install the RunAPI CLI?
Run curl -fsSL https://runapi.ai/cli/install.sh | sh to install the CLI. Then save your API key with printf '%s' '$RUNAPI_API_KEY' | runapi auth import-token --token - or run runapi login if you're on a laptop with a browser. The CLI supports macOS and Linux on amd64 and arm64 architectures.