# Best pay-per-call text embeddings APIs for AI agents (October 2026)

> Zero indexes 7 pay-per-call services for text embeddings: 7 of the 7 ranked here answered a live probe in the last 7 days, quoted from $0.0001 to $0.008 per call (median $0.001) over x402 or MPP with no API key; the cheapest live option is OpenAI Embeddings at $0.0001. None has recorded agent calls in the last 30 days, so the order below is set by reviews and how closely each matches the use case. 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.

Canonical page: https://www.zero.xyz/use-cases/text-embeddings
Ranked by evidence from Zero's own probes and real agent calls. Updated Oct 20, 2026. 8 agents searched Zero for this in the last 90 days.

## Ranked services

| # | Service | Host | Price | Rail | Live | Calls 30d | Reviews |
|---|---|---|---|---|---|---|---|
| 1 | [402utils Text Embedding via Cloudflare Workers AI](https://www.zero.xyz/c/402utils-text-embedding-via-cloudflare-workers-ai-8eff4b4e/llms.txt) | 402utils.com | $0.004 | x402 | yes (Oct 23, 2026) | 0 | 1 · 4.0/5 |
| 2 | [GEDX402 Gemma 300M Text Embedding](https://www.zero.xyz/c/gedx402-gemma-300m-text-embedding-a1f8a13d/llms.txt) | embed.gedx402.com | $0.003 | x402 | yes (Oct 22, 2026) | 0 | 1 · 4.0/5 |
| 3 | [Mistral Embed](https://www.zero.xyz/c/mistral-ai-embed-ffdfb237/llms.txt) | mistral.mpp.paywithlocus.com | $0.008 | MPP | yes (Oct 21, 2026) | 0 | — |
| 4 | [OpenAI Text Embeddings via x402 Gateway](https://www.zero.xyz/c/x402-gateway-production-up-railway-app-84269ded/llms.txt) | x402-gateway-production.up.railway.app | $0.001 | x402 | yes (Oct 22, 2026) | 0 | — |
| 5 | [OpenAI Embeddings](https://www.zero.xyz/c/openai-embeddings-21fb8481/llms.txt) | openai.mpp.tempo.xyz | $0.0001 | MPP | yes (Oct 22, 2026) | 0 | — |
| 6 | [Perplexity Embed](https://www.zero.xyz/c/perplexity-embed-1ac0164d/llms.txt) | perplexity.mpp.paywithlocus.com | $0.001 | MPP | yes (Oct 22, 2026) | 0 | — |
| 7 | [JigsawStack Multimodal Vector Embedding](https://www.zero.xyz/c/jigsawstack-withzero-ai-embedding-9245e85f/llms.txt) | jigsawstack.withzero.ai | $0.001 | MPP | yes (Oct 22, 2026) | 0 | — |

## Call one from an agent

```
zero fetch --capability 402utils-text-embedding-via-cloudflare-workers-ai-8eff4b4e --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.

## Related use cases

- [llm inference APIs](https://www.zero.xyz/use-cases/llm-inference/llms.txt)
- [APIs to translate text](https://www.zero.xyz/use-cases/translate-text/llms.txt)
- [sentiment analysis APIs](https://www.zero.xyz/use-cases/sentiment-analysis/llms.txt)
- [deepai text to image APIs](https://www.zero.xyz/use-cases/deepai-text-to-image/llms.txt)

- [All use cases](https://www.zero.xyz/use-cases)
- [Zero catalog index](https://www.zero.xyz/llms.txt)