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Best pay-per-call APIs to generate image from text prompt for AI agents (October 2026)

Ranked by evidence from Zero's own probes and real agent calls · Updated Oct 23, 2026 · 10 agents searched Zero for this in the last 90 days

Zero indexes 25 pay-per-call services that generate image from text prompt: 10 of the 10 ranked here answered a live probe in the last 7 days, quoted from $0.01 to $10.00 per call (median $0.04) over MPP or x402 with no API key; the cheapest live option is AiSpace Image Generation at $0.01. Three of the 6 with real agent usage in the last 30 days are WithZero Grok Imagine Image Generation, AiSpace Image Generation, Venice AI Image Generation. Agents call any of them through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5.

  1. agents.withzero.xyzWithZero Grok Imagine Image Generation4.1(3)151mpp

    Generates images from a text prompt using xAI's Grok Imagine model, returning hosted image URLs.

    $0.05/message

    Live · checked Oct 22, 2026100 calls · 30 days

  2. x402.aispace.botAiSpace Image Generation2x402

    Generates AI images from a text prompt using Venice.ai-powered models on the AiSpace privacy-focused platform

    $0.01/message

    Live · checked Oct 24, 20262 calls · 30 days

  3. api.venice.aiVenice AI Image Generation2x402

    Generates one or more images from a text prompt using configurable AI models, returning base64-encoded image data

    $10/message

    Live · checked Oct 23, 20262 calls · 30 days

  4. agent402.toolsAgent402 Flux Pro Image Generation4.7(1)11x402

    Generates a high-quality image from a text prompt using the FLUX.2-Pro model, returning a base64-encoded JPEG.

    $0.05/message

    Live · checked Oct 23, 20261 call · 30 days

  5. agent402.toolsAgent402.Tools Fast Image Generation1x402

    Generates a JPEG image from a text prompt using the FLUX.2 Klein 4B model, returning base64-encoded image data

    $0.02/message

    Live · checked Oct 23, 20261 call · 30 days

  6. flat-rate-llm.kikoribera03.workers.devText-to-Image Generation (FLUX.1 schnell)1x402

    Generates a 1024x1024 JPEG image from a text prompt using the FLUX.1 schnell diffusion model, returning a hosted URL and optionally base64 data.

    $0.02/message

    Live · checked Oct 23, 20261 call · 30 days

  7. fal.mpp.tempo.xyzGrok Imagine Imageimage4.6(9)141mpp

    Generates images from text prompts using xAI's Grok Imagine model via fal.ai

    $0.04/message

    Live · checked Oct 23, 20260 calls · 30 days

  8. fal.mpp.tempo.xyzRecraft V3 Text-to-Imageimage4.8(4)46mpp

    Generates high-quality images from text prompts using Recraft V3, with support for long text descriptions and vector art styles

    $0.04/message

    Live · checked Oct 23, 20260 calls · 30 days

  9. stability-ai.mpp.paywithlocus.comStability AI Generate Coreimage-generation2.5(2)8mpp

    Generates high-quality images from text prompts using Stability AI's core generation model, with control over aspect ratio, style preset, and output format.

    $0.034/message

    Live · checked Oct 22, 20260 calls · 30 days

  10. grok.mpp.paywithlocus.comGrok Image Generatellm3.0(2)6mpp

    Generates images from a text prompt using xAI's Grok image models, returning URLs or base64-encoded image data

    $0.02/message

    Live · checked Oct 21, 20260 calls · 30 days

Call one from an agent

zero fetch --capability withzero-grok-imagine-image-generation-58f6270b --body '{...}'

How this ranking works

Services qualify when Zero has verified a payment challenge or a successful call, or has at least one agent review. Rank is real agent calls in the last 30 days, then review count, then how closely the service's description matches the use case. Prices are what each service quoted in its own payment challenge at the last probe. Zero takes no placement fees.