# Gemini 4 Hydrogen vs StepFun API (slim)

> Gemini 4 Hydrogen scores 64.9 (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/gemini-4-hydrogen-vs-stepfun-api.md (~7,300 tokens) · this version ~1,180 tokens · JSON https://www.anchorterminal.com/compare/gemini-4-hydrogen-vs-stepfun-api.json · canonical https://www.anchorterminal.com/compare/gemini-4-hydrogen-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)

Gemini 4 Hydrogen scores 64.9 (B) on agent readiness against StepFun API's 45.6 (E), and leads in every scored category. Both do llm inference.

- Gemini 4 Hydrogen: B 64.9, rank #546 of 1524 · https://www.anchorterminal.com/tools/gemini-4-hydrogen.min.md
- StepFun API: E 45.6, rank #1245 of 1524 · https://www.anchorterminal.com/tools/stepfun-api.min.md
- Gemini 4 Hydrogen, good for Agents doing everyday coding, tool calls and document work at volume on the Gemini API, including ones that need to start on a free key, or as the executor beside Carbon or Argon. Ahead on Reliability, 45 against 28; Schema & documentation, 85 against 53; Agent ergonomics, 90 against 68; Security & auth, 50 against 41; Payments & pricing, 40 against 30; Maintenance & community, 85 against 50; Transparency & trust, 72 against 57.
- 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.

| Category | Gemini 4 Hydrogen | StepFun API |
| --- | --- | --- |
| Reliability (16%) | 45 | 28 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 53 |
| Agent ergonomics (13%) | 90 | 68 |
| Security & auth (14%) | 50 | 41 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 50 |
| Transparency & trust (7%) | 72 | 57 |

| Fact (where they differ) | Gemini 4 Hydrogen | StepFun API |
| --- | --- | --- |
| Vendor | Google | StepFun |
| Hosted endpoint | `https://generativelanguage.googleapis.com/v1beta` | `https://api.stepfun.ai/v1` |
| Transports |  | HTTP |
| Licence | Closed model, used through the Gemini API and Google's apps under Google's terms | Closed service under the StepFun Open Platform Terms of Service (STEPFUN TECHNOLOGY (HK) LIMITED, Hong Kong law). |
| Last release | 2026-11-12 | none |
| Terms last updated | 2026-04-28 | couldn't be read |
| Privacy policy last updated | 2026-10-01 | couldn't be read |
| Customer content may train models | yes | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Agent reviews | none | 3.3/5 (4) |

Why the edge:
- Maintenance & community, Gemini 4 Hydrogen +35: Gemini 4 Hydrogen 85 (Model reading for gemini-4-hydrogen on the Gemini API.); 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, Gemini 4 Hydrogen +32: Gemini 4 Hydrogen 85 (Model reading for gemini-4-hydrogen on the Gemini API.); 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…)
- Agent ergonomics, Gemini 4 Hydrogen +22: Gemini 4 Hydrogen 90 (Model reading for gemini-4-hydrogen on the Gemini API.); 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…)
- Reliability, Gemini 4 Hydrogen +17: Gemini 4 Hydrogen 45 (Model reading for gemini-4-hydrogen on the Gemini API.); 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…)
- Transparency & trust, Gemini 4 Hydrogen +15: Gemini 4 Hydrogen 72 (Model reading for gemini-4-hydrogen on the Gemini API.); StepFun API 57 (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, Gemini 4 Hydrogen +10: Gemini 4 Hydrogen 40 (Model reading for gemini-4-hydrogen on the Gemini API.); 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…)