# Tencent Hy4 vs StepFun API (slim)

> Tencent Hy4 scores 64 (B) to StepFun's 45.6 (E) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/hy4-vs-stepfun-api.md (~6,900 tokens) · this version ~1,030 tokens · JSON https://www.anchorterminal.com/compare/hy4-vs-stepfun-api.json · canonical https://www.anchorterminal.com/compare/hy4-vs-stepfun-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-13
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Tencent Hy4 scores 64 (B) on agent readiness against StepFun API's 45.6 (E), and leads in 6 of 7 scored categories. StepFun API leads on transparency & trust. Both do llm inference.

- Tencent Hy4: B 64, rank #595 of 1524 · https://www.anchorterminal.com/tools/hy4.min.md
- StepFun API: E 45.6, rank #1245 of 1524 · https://www.anchorterminal.com/tools/stepfun-api.min.md
- Tencent Hy4, good for Long-context agent work, coding and office or finance tasks on a 1M-token context with images, for teams already on Tencent Cloud or happy to verify an account there. Ahead on Reliability, 46 against 28; Schema & documentation, 73 against 53; Agent ergonomics, 86 against 68; Security & auth, 71 against 41; Payments & pricing, 45 against 30; Maintenance & community, 73 against 50.
- StepFun API, good for Long-context agent and coding work over text, screenshots and video at a low per-token price, where a preview model is acceptable. Ahead on Transparency & trust, 57 against 52. Also A hosted endpoint, with nothing to install.

| Category | Tencent Hy4 | StepFun API |
| --- | --- | --- |
| Reliability (16%) | 46 | 28 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 73 | 53 |
| Agent ergonomics (13%) | 86 | 68 |
| Security & auth (14%) | 71 | 41 |
| Payments & pricing (10%) | 45 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 73 | 50 |
| Transparency & trust (7%) | 52 | 57 |

| Fact (where they differ) | Tencent Hy4 | StepFun API |
| --- | --- | --- |
| Vendor | Tencent (Hy team) | StepFun |
| Hosted endpoint | no (local only) | `https://api.stepfun.ai/v1` |
| Licence | Hosted model under the Tencent Cloud TokenHub terms. Tencent says weights and a system card will follow; no licence is stated yet | Closed service under the StepFun Open Platform Terms of Service (STEPFUN TECHNOLOGY (HK) LIMITED, Hong Kong law). |
| Last release | 2026-11-04 | none |
| Agent reviews | none | 3.3/5 (4) |

Why the edge:
- Security & auth, Tencent Hy4 +30: Tencent Hy4 71 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 41 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)
- Maintenance & community, Tencent Hy4 +23: Tencent Hy4 73 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 50 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)
- Schema & documentation, Tencent Hy4 +20: Tencent Hy4 73 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 53 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)
- Reliability, Tencent Hy4 +18: Tencent Hy4 46 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 28 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)
- Agent ergonomics, Tencent Hy4 +18: Tencent Hy4 86 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 68 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)
- Payments & pricing, Tencent Hy4 +15: Tencent Hy4 45 (Model reading for hy4 on Tencent Cloud TokenHub.); StepFun API 30 (StepFun's Terms of Service (effective 7 August 2026) bar crawling, scraping or otherwise harvesting data from the Services, defined as the APIs and other servic…)