# Replicate Deployments vs Vast.ai

> Replicate Deployments scores 63.6 (B) on agent readiness against Vast.ai's 62.6 (B), and leads in 5 of 7 scored categories. Vast.ai leads on security & auth and maintenance & community. Both do compute gpu. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/replicate-deploy-vs-vast-ai
- Markdown: https://www.anchorterminal.com/compare/replicate-deploy-vs-vast-ai.md (~2,300 tokens)
- Slim: https://www.anchorterminal.com/compare/replicate-deploy-vs-vast-ai.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/replicate-deploy-vs-vast-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: 2026-10-08

Replicate Deployments scores 63.6 (B) on agent readiness against Vast.ai's 62.6 (B), and leads in 5 of 7 scored categories. Vast.ai leads on security & auth and maintenance & community. Both do compute gpu.

- Replicate Deployments: grade B, 63.6/100, rank #303 of 722. Markdown https://www.anchorterminal.com/tools/replicate-deploy.md · JSON https://www.anchorterminal.com/api/v1/tools/replicate-deploy.json
- Vast.ai: grade B, 62.6/100, rank #331 of 722. Markdown https://www.anchorterminal.com/tools/vast-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/vast-ai.json

## Which one, for what

### Replicate Deployments (B)

Good for: Teams already calling Replicate's public models who want their own model behind the same API, MCP server and webhooks.

Ahead on:
- Reliability, 75 against 65
- Schema & documentation, 85 against 78
- Agent ergonomics, 68 against 57
- Payments & pricing, 30 against 20
- Transparency & trust, 78 against 62

Also in its favour:
- Runs on your own machine
- Open source

Watch for: Private instances bill set-up and idle time, H100 at $5.49 an hour

### Vast.ai (B)

Good for: Cost-sensitive training, batch work and self-managed inference where the agent can search listings, set a price cap and tolerate host variance or interruption.

Ahead on:
- Security & auth, 72 against 40
- Maintenance & community, 81 against 70

Watch for: No SLA. The terms say availability is not guaranteed and the service can change without notice


## Score by category

| Category | Weight | Replicate Deployments | Vast.ai | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 65 | Replicate Deployments +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 85 | 78 | Replicate Deployments +7 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 57 | Replicate Deployments +11 |
| Security & auth | 14% (17.5 this run) | 40 | 72 | Vast.ai +32 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | Replicate Deployments +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 70 | 81 | Vast.ai +11 |
| Transparency & trust | 7% (8.8 this run) | 78 | 62 | Replicate Deployments +16 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.6 · B** | **62.6 · B** | |

## Facts side by side

| Fact | Replicate Deployments | Vast.ai |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Replicate | Vast.ai Inc. |
| Hosted endpoint | `https://api.replicate.com/v1` | `https://console.vast.ai/api/v0` |
| Transports | HTTP, SSE (legacy), stdio | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary service under Vast.ai's Terms of Use Agreement. The `vastai` CLI and Python SDK on GitHub are MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-22 | 2026-10-02 |
| Terms last updated | 2026-04-01 | 2026-09-01 |
| Privacy policy last updated | 2026-04-01 | 2025-06-18 |
| 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 | yes |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | yes | yes |
| Popularity | 9.5k stars, 634k npm/wk, 387k PyPI/wk | 223 stars, 33k PyPI/wk |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Replicate Deployments.** OpenAPI file, llms.txt and an MCP server with a two-tool code mode. Private instances bill set-up and idle time, H100 at $5.49 an hour.

**Vast.ai.** API keys can be limited by permission category and by resource ID, the REST API has a public OpenAPI 3.1 file, and the CLI ships weekly with a skill file for coding agents. Machines belong to independent hosts, prices move with the market, rate-limit thresholds are unpublished, and there is no SLA or free tier.

## Before you call either

### Replicate Deployments

1. List `GET /v1/hardware` first and use the returned `sku` in the deployment body
2. Set `min_instances` to 0 for bursty work; a warm H100 bills $5.49 an hour whether called or not
3. Send `Prefer: wait` on deployment predictions to block instead of polling
4. Copy outputs within an hour; API prediction data is deleted after that
5. Wait for the reset time in the 429 body before retrying; prediction creates cap at 600 a minute

### Vast.ai

1. Create a scoped key with `vastai create api-key --permissions` for the agent. A default key has full account access, billing and key management included
2. Pass `--raw` on every CLI command for JSON output, and `-y` on `vastai destroy instance`, which otherwise waits for a confirmation prompt
3. Register an SSH key with `vastai create ssh-key` before creating an instance, or the host is unreachable
4. Destroy instances when finished. A stopped instance still bills storage, and a zero balance without a saved card leads to deletion
5. Back off on HTTP 429 yourself when calling REST directly. The CLI retries 429 three times from 0.15 seconds
6. Filter searches with `verified=true` or the Secure Cloud option for sensitive data, and set a `dph_total` price cap

## Questions

### Which is better for AI agents, Replicate Deployments or Vast.ai?

Replicate Deployments scores 63.6 (B) on agent readiness against Vast.ai's 62.6 (B), and leads in 5 of 7 scored categories. Vast.ai leads on security & auth and maintenance & community.

### Do Replicate Deployments and Vast.ai need an API key?

Both need an API key.

### Can an agent call Replicate Deployments and Vast.ai without installing anything?

Yes. Replicate Deployments has a hosted endpoint at https://api.replicate.com/v1 and Vast.ai at https://console.vast.ai/api/v0.

### Are Replicate Deployments and Vast.ai open source?

Replicate Deployments is open source (Apache-2.0). No open-source release is listed for Vast.ai.


## For agents

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

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