# BlockRun.AI vs Cloudflare Workers AI

> BlockRun.AI scores 72.4 (BB) to Cloudflare Workers AI's 68.3 (B) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/blockrun-ai-vs-cloudflare-workers-ai
- Markdown: https://www.anchorterminal.com/compare/blockrun-ai-vs-cloudflare-workers-ai.md (~2,900 tokens)
- Slim: https://www.anchorterminal.com/compare/blockrun-ai-vs-cloudflare-workers-ai.min.md (~880 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/blockrun-ai-vs-cloudflare-workers-ai.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

BlockRun.AI scores 72.4 (BB) on agent readiness against Cloudflare Workers AI's 68.3 (B), and leads in 2 of 7 scored categories. Cloudflare Workers AI leads on reliability, schema & documentation, agent ergonomics, security & auth and transparency & trust. Both do llm inference. BlockRun.AI accepts x402. Cloudflare Workers AI doesn't.

- BlockRun.AI: grade BB, 72.4/100, rank #104 of 950. Markdown https://www.anchorterminal.com/tools/blockrun-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/blockrun-ai.json
- Cloudflare Workers AI: grade B, 68.3/100, rank #224 of 950. Markdown https://www.anchorterminal.com/tools/cloudflare-workers-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-workers-ai.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

### BlockRun.AI (BB)

Good for: Agents that must start and pay with no human sign-up, and builders testing x402 against a real inference gateway.

Ahead on:
- Payments & pricing, 100 against 52
- Maintenance & community, 85 against 72

Also in its favour:
- Agent-ready, a grade of BB or better
- An agent can pay per call over x402, with no account
- Runs on your own machine
- No incidents deducted, where Cloudflare Workers AI loses 3 points for them

Watch for: The status page shows live checks only and keeps no incident history

### Cloudflare Workers AI (B)

Good for: Agents that already run on Cloudflare Workers, or that want open-weight chat, embedding, reranking, speech and image models behind one token with a free daily allowance.

Ahead on:
- Reliability, 66 against 55
- Schema & documentation, 80 against 75
- Agent ergonomics, 75 against 70
- Security & auth, 77 against 70
- Transparency & trust, 76 against 65

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No SLA for Workers AI was found in the docs or the agreements read


## Score by category

| Category | Weight | BlockRun.AI | Cloudflare Workers AI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 66 | Cloudflare Workers AI +11 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 75 | 80 | Cloudflare Workers AI +5 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 75 | Cloudflare Workers AI +5 |
| Security & auth | 14% (17.5 this run) | 70 | 77 | Cloudflare Workers AI +7 |
| Payments & pricing | 10% (12.5 this run) | 100 | 52 | BlockRun.AI +48 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 72 | BlockRun.AI +13 |
| Transparency & trust | 7% (8.8 this run) | 65 | 76 | Cloudflare Workers AI +11 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **72.4 · BB** | **68.3 · B** | |

## Facts side by side

| Fact | BlockRun.AI | Cloudflare Workers AI |
| --- | --- | --- |
| Kind | MCP server | Model API |
| Vendor | BlockRun, Inc. | Cloudflare, Inc. |
| Hosted endpoint | no (local only) | `https://api.cloudflare.com/client/v4/accounts/{account_id}/ai` |
| Transports | stdio | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| x402 | yes | payer tooling only |
| Licence | MIT | Proprietary service under Cloudflare's Self-Serve Subscription Agreement. Each hosted model carries its own open-weight licence, linked from its model page. The `cloudflare` SDKs are Apache-2.0, `workers-ai-provider` is MIT and the OpenAPI repository is BSD-3-Clause |
| Tools exposed | 19 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-29 | 2026-10-01 |
| Terms last updated | 2026-09-02 | 2025-09-12 |
| Privacy policy last updated | 2026-09-02 | no date given |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 5 stars, 679 PyPI/wk | 380k npm/wk |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**BlockRun.AI.** x402 v2 on its own gateway, USDC on Base and Solana, with Base Sepolia for testing. The status page shows live checks only and keeps no incident history.

**Cloudflare Workers AI.** Per-model prices, rate limits and JSON Schemas are public, 10,000 neurons a day are free, and x402 payment is in beta on `/ai/run` for four models. No SLA was found, three models moved to paid-only access on 28 July 2026 with no notice, and several docs pages still use a model retired in May.

## Before you call either

### BlockRun.AI

1. Fund a dedicated wallet with a small USDC balance. The balance is the spending cap
2. Use `blockrun_wallet` delegate with `agent_limit` before handing a sub-agent the server
3. On a 429, wait `Retry-After` and read `X-RateLimit-Source` to fail over to the same tier on another provider
4. Call `blockrun_models` before hard-coding a model name, since models are removed without notice
5. Use `mode:"free"` for drafts and classification, paid models for generation

### Cloudflare Workers AI

1. Check the model page before calling. Seven models need Workers Paid or AI Gateway credits and return 403 with code 5035 on the Free plan
2. Read the internal code on a 429. 3036 means the day's 10,000 free neurons are spent until 00:00 UTC, 3040 means capacity, so retry later
3. Set `options.rejectIfBusy` to fail fast, or add `?queueRequest=true` for the batch route when the answer can wait
4. Send the same `x-session-affinity` value on every turn of a session to reach the prefix cache and the cached-input price
5. Keep paid frontier models under 20 requests a minute per model, or 50 with prepaid AI Gateway credits

## Questions

### Which is better for AI agents, BlockRun.AI or Cloudflare Workers AI?

BlockRun.AI scores 72.4 (BB) on agent readiness against Cloudflare Workers AI's 68.3 (B), and leads in 2 of 7 scored categories. Cloudflare Workers AI leads on reliability, schema & documentation, agent ergonomics, security & auth and transparency & trust.

### Do BlockRun.AI and Cloudflare Workers AI need an API key?

BlockRun.AI takes an API key or an OAuth sign-in. Cloudflare Workers AI needs an API key. An agent can also pay BlockRun.AI per call over x402, with no account.

### Can an agent call BlockRun.AI and Cloudflare Workers AI without installing anything?

BlockRun.AI runs on your own machine, with no hosted endpoint listed. Cloudflare Workers AI has a hosted endpoint at https://api.cloudflare.com/client/v4/accounts/{account_id}/ai.


## For agents

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

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