Everything you need to know about NexaAPI

NexaAPI is a unified AI model inference platform that gives you access to 56+ state-of-the-art AI models through a single API key. Instead of managing separate accounts with OpenAI, Stability AI, Replicate, and others, you get one API, one SDK, and one bill — at up to 80% lower cost than going direct.

NexaAPI offers the most affordable AI image generation API on the market. Generate images with Flux Schnell for as low as $0.003 per image, SDXL for $0.002, and Flux Pro for $0.05 — up to 5x cheaper than Replicate or FAL.ai. Check our pricing page for full details.

NexaAPI offers the same models as Replicate (Flux, SDXL, Stable Diffusion, etc.) at significantly lower prices — typically 3-5x cheaper. We also provide faster cold-start times, a simpler REST API, and dedicated support. See our detailed NexaAPI vs Replicate comparison.

NexaAPI supports 56+ models across image generation (Flux, Stable Diffusion, SDXL, Ideogram, Recraft, GPT-Image, Imagen 4), video generation (Kling v3, Veo 3.1, Sora 2, Minimax), audio (ElevenLabs, OpenAI TTS, Whisper, Suno, Udio), and tools (background removal, upscaling, face enhancement). Browse all models on our models page.

Yes! NexaAPI is one of the best FAL.ai alternatives. We offer the same Flux and Stable Diffusion models at lower prices, plus additional models FAL.ai doesn't support like Kling v3, Veo 3.1, and ElevenLabs. See our NexaAPI vs FAL.ai comparison.

For 2025, NexaAPI provides access to the best video generation models including Kling v3 Pro (cinema-quality), Veo 3.1 (Google's latest), and Sora 2 (OpenAI). All accessible through one unified API with pay-per-use pricing starting at $0.10 per video generation.

With NexaAPI, AI image generation costs as little as $0.002 per image (SDXL) to $0.05 per image (Flux Pro). Flux Schnell — the most popular model — costs just $0.003 per image. That's up to 80% cheaper than competitors. See our full pricing breakdown.

NexaAPI is the cheapest Replicate alternative. For example, Flux Schnell on Replicate costs ~$0.015/image while NexaAPI charges just $0.003 — that's 5x cheaper. We support all the same models with a compatible API format. See the full comparison.

Flux API pricing varies significantly by provider. NexaAPI offers the best rates: Flux Schnell at $0.003/image (vs $0.015 on Replicate, $0.01 on FAL.ai), Flux Dev at $0.025/image, and Flux Pro at $0.05/image. See our Flux API FAQ for details.

Yes! New accounts receive $1.00 in free credits — enough for 300+ Flux Schnell images or 500+ SDXL images. No credit card required to start. After that, you pay only for what you use with no minimum spend.

NexaAPI uses simple pay-per-use pricing. You purchase credits and pay per API call — no subscriptions, no seat fees, no hidden costs. Credits never expire. Volume discounts are available for high-usage customers. Visit our pricing page for model-by-model rates.

AI video generation pricing on NexaAPI starts at $0.10 per generation for standard models. Kling v3 Standard costs $0.25/video, Kling v3 Pro costs $0.50/video, and Veo 3.1 costs $0.40/video. These are significantly cheaper than going direct to each provider.

Using Flux API through NexaAPI is simple: send a POST request to https://api.nexa-api.com/v1/images/generate with your prompt and model set to "flux-schnell", "flux-dev", or "flux-pro". You'll get back a high-quality image in seconds. See our quickstart guide for code examples.

Flux Schnell is the fastest model (~1s generation, $0.003/image) — great for prototyping. Flux Dev offers higher quality at moderate speed (~3s, $0.025/image). Flux Pro delivers the best quality (~5s, $0.05/image) for production use. All are available through NexaAPI. Learn more in our Flux API FAQ.

Yes! NexaAPI supports Stable Diffusion 3.5 Large, Medium, and Turbo variants. SD 3.5 Large delivers exceptional quality for $0.035/image, while SD 3.5 Turbo offers fast generation at $0.01/image. See our Stable Diffusion API FAQ.

Absolutely! NexaAPI provides API access to the best video generation models: Kling v3 (Pro & Standard), Veo 3.1, Sora 2, Minimax Video 01, and Seedance v1.5. Send a POST request to our video endpoint with a text prompt or reference image. See our video generation docs.

NexaAPI offers ElevenLabs v3 (the most natural-sounding TTS), OpenAI TTS, and Kokoro TTS. Generate speech from text via our audio endpoint. ElevenLabs v3 supports 29 languages with emotional control. See our ElevenLabs API FAQ.

Yes! NexaAPI offers AI-powered background removal that works on any image — product photos, portraits, complex scenes. It costs just $0.005 per image and processes in under 2 seconds. See our background removal FAQ.

With NexaAPI, generating images programmatically is as simple as a single API call. Use our REST API or Python/Node.js SDKs. Example: POST /v1/images/generate with {"model": "flux-schnell", "prompt": "a sunset over mountains"}. Get started in under 5 minutes with our quickstart guide.

Yes! We provide official SDKs for Python (pip install nexaapi) and Node.js (npm install nexaapi). Both support all endpoints with full TypeScript/type-hint support. See our SDK documentation.

Free tier accounts get 10 requests/second. Paid accounts start at 50 requests/second, with enterprise plans supporting up to 500+ requests/second. Rate limits are per-account and can be increased on request.

NexaAPI delivers industry-leading speed. Flux Schnell generates images in ~1 second, SDXL in ~2 seconds, and Flux Pro in ~5 seconds. We use optimized GPU infrastructure with zero cold-start times for popular models.

Yes! All NexaAPI plans support commercial use. The generated content is yours to use in any commercial application — websites, apps, marketing materials, products, etc. Model-specific licensing terms apply (e.g., Flux Pro has a commercial license).

NexaAPI accepts all major credit and debit cards (Visa, Mastercard, American Express), as well as wire transfers for enterprise accounts. All payments are processed securely through Stripe.

No! NexaAPI credits never expire. Once purchased, your credits remain in your account until used. There are no monthly minimums or use-it-or-lose-it policies.

Yes, we offer refunds on unused credits within 30 days of purchase. Contact our support team for refund requests. Enterprise customers have custom billing arrangements.

Yes! We offer volume discounts starting at $100/month in usage. Enterprise customers with $1,000+/month usage get custom pricing with up to 40% additional discount. Contact us for enterprise pricing.

NexaAPI supports PNG, JPEG, and WebP output formats for image generation. You can specify the format in your API request. Input images for img2img, upscaling, and editing support PNG, JPEG, WebP, and GIF.

Maximum resolution depends on the model. Flux models support up to 2048×2048, SDXL supports 1024×1024 natively (with upscaling to 4096×4096), and our upscaler can enhance images up to 4x their original resolution.

Yes! For long-running tasks like video generation, NexaAPI supports webhooks. Provide a callback URL in your request, and we'll POST the result to your endpoint when processing completes. You can also poll the job status endpoint.

Yes, NexaAPI is fully GDPR compliant. We don't store your generated content beyond the delivery window (typically 1 hour). We don't use your data to train models. You can request data deletion at any time.

NexaAPI guarantees 99.9% uptime for all paid plans. Our infrastructure is distributed across multiple regions with automatic failover. Enterprise plans include a 99.99% SLA with dedicated support.