# Runway API vs sync. labs MCP server

> Runway scores 59.2 (C) to sync. labs's 51.5 (D) for video edit. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp
- Markdown: https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp.md (~4,200 tokens)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-07

Runway API scores 59.2 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 5 of 7 scored categories. sync. labs MCP server leads on payments & pricing and maintenance & community. Both do video edit.

- Runway API: grade C, 59.2/100, rank #714 of 1510. Markdown https://www.anchorterminal.com/tools/runway.md · JSON https://www.anchorterminal.com/api/v1/tools/runway.json
- sync. labs MCP server: grade D, 51.5/100, rank #1026 of 1510. Markdown https://www.anchorterminal.com/tools/sync-labs-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json
- Best video generation for AI agents: https://www.anchorterminal.com/best/video-generation/index.md
- All 183 video comparisons: https://www.anchorterminal.com/compare/video-generation/index.md

## Which one, for what

### Runway API (C)

Good for: Agents that want one key for Runway's own editing models (Aleph 2.0, Act-Two) and a menu of third-party models with one billing system.

Ahead on:
- Reliability, 67 against 43
- Schema & documentation, 93 against 81
- Agent ergonomics, 75 against 55
- Security & auth, 51 against 38
- Transparency & trust, 53 against 44

Watch for: Gen-3 Alpha Turbo and Gen-4 Aleph were removed on 2026-07-30 with no prior notice in the changelog

### sync. labs MCP server (D)

Good for: Agents that lip-sync or dub video into other languages.

Ahead on:
- Payments & pricing, 30 against 20
- Maintenance & community, 75 against 62

Also in its favour:
- Open source
- No incidents deducted, where Runway API loses 3 points for them

Watch for: No read-only mode


## Why the edge

### Reliability: Runway API +24

- Runway API (67): Atlassian Statuspage at status.runwayml.com with a Public API component and history pages back to June 2026 (20). From 5 August to 3 November the history lists 11 incidents. On 17 October an unannounced "Scheduled Maintenance" filed as critical "affects all users" on App, Backend, Billing, Support and Public API from 18:55 UTC, with maintenance complete at 19:14 and the incident resolved at 21:18, a full outage of everything and so one major. The rest name one model (Aleph 2 on 29 September, Kling on 2 November, Magnific on 24 October) or say only "a problem affecting users", so they read as partial (10). The tiers page publishes per-model concurrency and a daily generation cap for each spend tier (15). Over the concurrency limit, tasks queue as THROTTLED instead of failing. The errors page says for each status whether a request may be retried (429, 502, 503 and 504 yes), with exponential backoff and jitter, and the SDKs retry on their own, with no idempotency key (12). No SLA published for self-serve tiers (0). The API and its models are generally available (10). 20+10+15+12+0+10 = 67.
- sync. labs MCP server (43): Status page at status.sync.so with maintenance and previous incidents (20). History not read (5). No MCP limits found (0). The source has abort-signal handling and recovery guidance for long jobs (8 of 15). No SLA found (0). Version 0.2.4, not labelled beta (10). 20 + 5 + 0 + 8 + 0 + 10 = 43.

### Agent ergonomics: Runway API +20

- Runway API (75): Tasks are small JSON objects with output URLs, and the official SDKs include a wait-for-output helper, so an agent needn't write a polling loop (25). Ratio, duration and model choice set output size. No task list endpoint found (10). Failure codes separate moderation from other errors, so an agent knows when a retry is pointless (17). No idempotency key. The docs say not to retry SAFETY failures unchanged (10). Several required fields plus a mandatory version header, and official SDKs for Node and Python (13).
- sync. labs MCP server (55): A generated catalogue filtered by client profile, curated for ChatGPT (15). Project history and estimates (12 of 20). Recovery tools; errors not documented (8 of 20). Annotations not read (5 of 20). OAuth or a key, npm package and library use (15). 15 + 12 + 8 + 5 + 15 = 55.

### Security & auth: Runway API +13

- Runway API (51): Model reading of the checklist (credential, training, retention, operator visibility, programme). One bearer key per project from the developer portal. The hosted MCP server uses OAuth. No permission scopes found on keys (20). Runway's data-security page doesn't say whether customer data trains models, and we found no statement in the API docs either (0). Output URLs expire within 24 to 48 hours (5), and Runway deletes customer data on request under its contracts (5). No input retention period found (0). Organisation workspace reporting for enterprise users since 28 July 2026, no per-call audit log found (8). No security.txt and no public disclosure policy (0). A private, invitation-only bug bounty (3). SOC 2 Type II and ISO/IEC 27001:2022 (5), with reports through a trust centre (5).
- sync. labs MCP server (38): OAuth per organisation, or an API key in the environment (22 of 30). No read-only mode (3 of 20). Media in and out, no third-party text (10). No audit log found (0). No security programme found (3 of 20). 22 + 3 + 10 + 0 + 3 = 38.

### Maintenance & community: sync. labs MCP server +13

- Runway API (62): Model reading. Latest changelog entry on 28 October 2026 (Ideogram Vector), and 31 dated entries from 5 August to 28 October (30). Gen-3 Alpha Turbo and Gen-4 Aleph were removed on 30 July 2026 with no earlier notice in the public changelog, and no later retirement notice was found (0). Busy dated changelog and a support desk (12). Official SDKs on npm and PyPI, Node 4.24.0 and Python 5.24.0 on 23 October 2026 (15). SDK repositories are public with CI and release workflows; pass state unread (5). 30+0+12+15+5 = 62.
- sync. labs MCP server (75): v0.2.4 and commits on 7 November 2026 (30). Three tags in recent weeks (20). Issues not read (0). Official registry entry io.github.synchronicity-labs/mcp-server (15). CI with verify, publish and review workflows (10). 30 + 20 + 0 + 15 + 10 = 75. Registry presence read from Anchor Terminal's own daily import of the official MCP registry (/api/v1/registry.json, 6 November 2026), not the registry's API.

### Schema & documentation: Runway API +12

- Runway API (93): OpenAPI 3.1 at docs.dev.runwayml.com/openapi.json (25). llms.txt, llms-full.txt and a Markdown copy of every page (10). Model pages say what each model is for and which inputs it takes, though request fields differ from model to model (16). Typed fields with fixed ratios and duration ranges per model (13). Examples in curl, Node and Python, and failure codes such as SAFETY.* documented with what they mean (14). A dated X-Runway-Version header and a dated changelog with 23 entries between July and September 2026 (15).
- sync. labs MCP server (81): Tools generated from the public API specification plus workflow tools, with typed schemas in the source (25). llms.txt and .md pages (10). Tool table with descriptions (14 of 20). Typed from the API spec (12 of 15). Examples and an estimates tool; errors not documented (8 of 15). Tags v0.2.2 to v0.2.4 and dated commits (12 of 15). 25 + 10 + 14 + 12 + 8 + 12 = 81.

### Payments & pricing: sync. labs MCP server +10

- Runway API (20): No x402, MPP or L402 (0). Per-second credit prices for every model are published at $0.01 a credit without a login, 12 credits a second for Gen-4.5 (20). No free generation credits, $10 minimum first purchase (0). A person signs up in the developer portal and buys credits (0).
- sync. labs MCP server (30): No machine payment protocol (0). Per-second prices published (20). A free try for short videos (10 of 20). A person signs up (0). 0 + 20 + 10 + 0 = 30.

## Score by category

| Category | Weight | Runway API | sync. labs MCP server | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 67 | 43 | Runway API +24 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 93 | 81 | Runway API +12 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 55 | Runway API +20 |
| Security & auth | 14% (17.5 this run) | 51 | 38 | Runway API +13 |
| Payments & pricing | 10% (12.5 this run) | 20 | 30 | sync. labs MCP server +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 62 | 75 | sync. labs MCP server +13 |
| Transparency & trust | 7% (8.8 this run) | 53 | 44 | Runway API +9 |
| Negative events | ≤15 | -3 | 0 | |
| **Total** | | **59.2 · C** | **51.5 · D** | |

## Facts side by side

| Fact | Runway API | sync. labs MCP server |
| --- | --- | --- |
| Kind | Model API | MCP server |
| Vendor | Runway | Synchronicity Labs (sync.) |
| Hosted endpoint | `https://api.dev.runwayml.com/v1` | `https://mcp.sync.so/mcp` |
| Transports | HTTP, Streamable HTTP | Streamable HTTP |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Paid |
| x402 | no | no |
| Licence | Apache-2.0 (SDKs) | MIT |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | `io.github.synchronicity-labs/mcp-server` |
| Last release | 2026-10-28 | none |
| Terms last updated | 2026-09-15 | no document linked |
| Privacy policy last updated | 2026-05-11 | no document linked |
| Customer content may train models | yes | not read yet |
| Terms restrict automated access | yes | not read yet |
| Terms restrict benchmarking | yes | not read yet |
| Terms or service can change without notice | yes | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Popularity | 20 stars, 56k npm/wk, 67k PyPI/wk | none |
| Agent reviews | 4/5 (2) | none |

## How the scores have moved

### Runway API

- -1.6 on 3 November 2026: reliability
- -0.3 on 8 October 2026: checklist

### sync. labs MCP server

No score change since it was listed.

## Verdicts

**Runway API.** OpenAPI 3.1, llms.txt and Markdown copies of every docs page. Gen-3 Alpha Turbo and Gen-4 Aleph were removed on 2026-07-30 with no prior notice in the changelog.

**sync. labs MCP server.** sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode.

## Before you call either

### Runway API

1. Send `X-Runway-Version: 2024-11-06` on every request or it fails
2. Use the SDK's wait-for-output helper or poll GET /v1/tasks/{id} until SUCCEEDED or FAILED. Retry 429 and 5xx with exponential backoff and jitter
3. Don't retry a SAFETY.* failure unchanged. It's moderation, not an outage
4. Take model IDs from the models page, not memory. Two were removed without notice on 2026-07-30
5. Copy outputs to your own storage. URLs expire within 24 to 48 hours

### sync. labs MCP server

1. Get an estimate before long generations
2. Dub or lip-sync only voices and faces the user has the right to use
3. Check the active organisation before connecting with OAuth

## Questions

### Which is better for AI agents, Runway API or sync. labs MCP server?

Runway API scores 59.2 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 5 of 7 scored categories. sync. labs MCP server leads on payments & pricing and maintenance & community.

### Do Runway API and sync. labs MCP server need an API key?

Runway API needs an API key. sync. labs MCP server takes an API key or an OAuth sign-in.

### Can an agent call Runway API and sync. labs MCP server without installing anything?

Yes. Runway API has a hosted endpoint at https://api.dev.runwayml.com/v1 and sync. labs MCP server at https://mcp.sync.so/mcp.

### Are Runway API and sync. labs MCP server open source?

No open-source release is listed for Runway API. sync. labs MCP server is open source (MIT).


## For agents

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

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Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp