# Cloudflare AI Gateway vs Prism Inference

> Cloudflare AI Gateway scores 66.8 (B) to Prism Inference's 60.1 (C) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference
- Markdown: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference.md (~3,000 tokens)
- Slim: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Cloudflare AI Gateway scores 66.8 (B) on agent readiness against Prism Inference's 60.1 (C), and leads in 6 of 7 scored categories. Prism Inference leads on schema & documentation. Both do llm inference.

- Cloudflare AI Gateway: grade B, 66.8/100, rank #275 of 950. Markdown https://www.anchorterminal.com/tools/cloudflare-ai-gateway.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-ai-gateway.json
- Prism Inference: grade C, 60.1/100, rank #528 of 950. Markdown https://www.anchorterminal.com/tools/prism-inference.md · JSON https://www.anchorterminal.com/api/v1/tools/prism-inference.json
- Best model APIs and inference for AI agents: https://www.anchorterminal.com/best/inference/index.md
- All 136 models comparisons: https://www.anchorterminal.com/compare/inference/index.md

## Which one, for what

### Cloudflare AI Gateway (B)

Good for: Teams that already hold a Cloudflare account and want one token, one bill, logs, budgets and fallbacks in front of several model providers, or that want to keep their own provider keys behind a proxy with spend limits.

Ahead on:
- Agent ergonomics, 73 against 68
- Security & auth, 75 against 65
- Payments & pricing, 52 against 30
- Maintenance & community, 75 against 49
- Transparency & trust, 73 against 61

Watch for: API tokens are account-scoped. Any token with AI Gateway Run can send requests through every gateway in the account and spend its stored provider keys

### Prism Inference (C)

Good for: Coding agents that want DeepSeek-V4.1-Flash at a low input price, with no retention, through whichever of the three wire formats the harness already speaks.

Ahead on:
- Schema & documentation, 82 against 75

Watch for: Two models. The docs mark Gemma 4 31B as request access per organisation, while llms.txt and the keyless catalogue list it as available


## Score by category

| Category | Weight | Cloudflare AI Gateway | Prism Inference | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 66 | 65 | Cloudflare AI Gateway +1 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 75 | 82 | Prism Inference +7 |
| Agent ergonomics | 13% (16.2 this run) | 73 | 68 | Cloudflare AI Gateway +5 |
| Security & auth | 14% (17.5 this run) | 75 | 65 | Cloudflare AI Gateway +10 |
| Payments & pricing | 10% (12.5 this run) | 52 | 30 | Cloudflare AI Gateway +22 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 49 | Cloudflare AI Gateway +26 |
| Transparency & trust | 7% (8.8 this run) | 73 | 61 | Cloudflare AI Gateway +12 |
| Negative events | ≤15 | -3 | -2 | |
| **Total** | | **66.8 · B** | **60.1 · C** | |

## Facts side by side

| Fact | Cloudflare AI Gateway | Prism Inference |
| --- | --- | --- |
| Kind | Model router | Model API |
| Vendor | Cloudflare, Inc. | Prism Technologies Inc |
| Hosted endpoint | `https://api.cloudflare.com/client/v4/accounts/{account_id}/ai` | `https://api.prisminference.com/v1` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Pay per use |
| x402 | payer tooling only | no |
| Licence | Proprietary service under Cloudflare's Self-Serve Subscription Agreement and its service-specific terms. Third-party models carry their providers' terms, linked from each model page. `ai-gateway-provider` is MIT and Cloudflare's OpenAPI repository is BSD-3-Clause | Proprietary service under Prism's terms of service. The OpenAPI file declares `LicenseRef-Proprietary`. The Hermes provider plugin repository carries no licence file |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-06 | 2026-10-06 |
| Terms last updated | 2025-09-12 | 2026-09-09 |
| Privacy policy last updated | no date given | 2026-09-09 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | yes |
| Popularity | 251k npm/wk | none |

## Verdicts

**Cloudflare AI Gateway.** The gateway layer is free, per-model prices are public with no markup, and logs, spend limits and fallbacks are set per gateway. API tokens cannot be limited to one gateway, the service terms take third-party models outside Cloudflare's DPA, no SLA names the product, and error codes changed on 6 October 2026 with same-day notice.

**Prism Inference.** Three wire formats, a public OpenAPI 3.1 file, per-token prices in a keyless catalogue and zero data retention by default on every tier. The service launched on 24 September 2026 with two models, one of them by request, from a two-person company. No rate-limit numbers, SLA document, free tier or deprecation policy was found.

## Before you call either

### Cloudflare AI Gateway

1. Use the REST API at `api.cloudflare.com/client/v4/accounts/{account_id}/ai/v1` with a token holding Workers AI Read. A token with only an AI Gateway permission returns 401 with code 10000
2. Send `cf-aig-gateway-id` on every Workers AI (`@cf/`) call and on dynamic routes. Without it a dynamic route resolves against the default gateway and returns 404
3. Set `cf-aig-collect-log: false` or `cf-aig-collect-log-payload: false` on sensitive requests. Logging of prompts and responses is on by default
4. Treat a 429 as a rate limit or a spent budget and a 401 with code 2009 as a rejected provider key. Do not retry a 2009
5. Set `byok_only` on the gateway or send `cf-aig-no-wholesale: true` to stop a request without a provider key falling through to paid Unified Billing credits

### Prism Inference

1. Call `GET https://api.prisminference.com/v1/models` at start-up, with no key, and use only ids it returns. Expect 403 on `gemma-4-31b` without organisation access
2. Use base URL `https://api.prisminference.com/v1` for OpenAI clients and `https://api.prisminference.com` with no `/v1` for Anthropic clients
3. Read `error.retryable` before retrying, and wait for `Retry-After` on 429, which covers both key limits and model capacity
4. Send `reasoning_effort: "none"` or `low` when latency matters. Reasoning is on by default and its tokens are billed as output
5. Keep conversation state yourself and send `store: false` on Responses. `previous_response_id`, stored responses and hosted tools aren't supported

## Questions

### Which is better for AI agents, Cloudflare AI Gateway or Prism Inference?

Cloudflare AI Gateway scores 66.8 (B) on agent readiness against Prism Inference's 60.1 (C), and leads in 6 of 7 scored categories. Prism Inference leads on schema & documentation.

### Do Cloudflare AI Gateway and Prism Inference need an API key?

Both need an API key.

### Can an agent call Cloudflare AI Gateway and Prism Inference without installing anything?

Yes. Cloudflare AI Gateway has a hosted endpoint at https://api.cloudflare.com/client/v4/accounts/{account_id}/ai and Prism Inference at https://api.prisminference.com/v1.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-prism-inference.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "cloudflare-ai-gateway", "b": "prism-inference"}`. From a terminal: `anchor compare cloudflare-ai-gateway prism-inference`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cloudflare-ai-gateway.json and https://www.anchorterminal.com/api/v1/tools/prism-inference.json

## Other comparisons with Cloudflare AI Gateway or Prism Inference

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