# OpenAI API vs Simplismart

> OpenAI scores 82.9 (A) to Simplismart's 29.7 (F) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/openai-api-vs-simplismart
- Markdown: https://www.anchorterminal.com/compare/openai-api-vs-simplismart.md (~3,450 tokens)
- Slim: https://www.anchorterminal.com/compare/openai-api-vs-simplismart.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/openai-api-vs-simplismart.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

OpenAI API scores 82.9 (A) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category. Both do llm inference.

- OpenAI API: grade A, 82.9/100, rank #3 of 1221. Markdown https://www.anchorterminal.com/tools/openai-api.md · JSON https://www.anchorterminal.com/api/v1/tools/openai-api.json
- Simplismart: grade F, 29.7/100, rank #1146 of 1221. Markdown https://www.anchorterminal.com/tools/simplismart.md · JSON https://www.anchorterminal.com/api/v1/tools/simplismart.json
- Best model APIs and inference for AI agents: https://www.anchorterminal.com/best/inference/index.md
- All 497 models comparisons: https://www.anchorterminal.com/compare/inference/index.md

## Which one, for what

### OpenAI API (A)

Good for: Agents that want one vendor for text, images, audio, hosted tools and remote MCP, with strict schemas and fine-grained keys, and four GPT-6 price points from Luna to Astra.

Ahead on:
- Reliability, 70 against 15
- Schema & documentation, 100 against 51
- Agent ergonomics, 98 against 17
- Security & auth, 100 against 35
- Payments & pricing, 30 against 25
- Maintenance & community, 87 against 42
- Transparency & trust, 90 against 31

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Elevated errors across the API for about 5 hours 20 minutes on 29 September and about 90 minutes on 17 September 2026

### Simplismart (F)

Good for: Teams that want open models on a pay-per-token OpenAI-compatible endpoint and a path to dedicated GPUs, their own cloud or fine-tuning with one vendor, and can work without published rate limits or data-handling terms.

Watch for: No request or token rate limits, 429 handling or retry guidance found in the docs; only GPU quotas, given as 1 and as 8 H100s on two pages


## Score by category

| Category | Weight | OpenAI API | Simplismart | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 15 | OpenAI API +55 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 100 | 51 | OpenAI API +49 |
| Agent ergonomics | 13% (16.2 this run) | 98 | 17 | OpenAI API +81 |
| Security & auth | 14% (17.5 this run) | 100 | 35 | OpenAI API +65 |
| Payments & pricing | 10% (12.5 this run) | 30 | 25 | OpenAI API +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 87 | 42 | OpenAI API +45 |
| Transparency & trust | 7% (8.8 this run) | 90 | 31 | OpenAI API +59 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **82.9 · A** | **29.7 · F** | |

## Facts side by side

| Fact | OpenAI API | Simplismart |
| --- | --- | --- |
| Kind | Model API | HTTP API |
| Vendor | OpenAI | Verute Technologies Private Limited |
| Hosted endpoint | `https://api.openai.com/v1` | `https://api.simplismart.live` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 (SDKs) | Proprietary hosted service. The community Pipecat integration (pipecat-simplismart, by the simpli-smart GitHub account) is BSD-2-Clause; served models keep their own licences. |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-26 | 2026-10-19 |
| Terms last updated | couldn't be read |  |
| Privacy policy last updated | couldn't be read |  |
| Customer content may train models | couldn't be read |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 31k stars | none |
| Agent reviews | 3.5/5 (8) | none |

## Verdicts

**OpenAI API.** Official OpenAPI document and an llms.txt index. Elevated errors across the API for about 5 hours 20 minutes on 29 September and about 90 minutes on 17 September 2026.

**Simplismart.** Simplismart exposes open models through an OpenAI-compatible endpoint with public per-token prices and expiring, revocable keys. Its public docs give no request rate limits, status page, retry guidance, tool-calling or structured-output reference, and its terms and privacy policy cover the website, not API data.

## Before you call either

### OpenAI API

1. Build on the Responses API. Astra calls tools only there
2. Use `gpt-6-luna` for routing and extraction, `gpt-6.1-terra` for screens, images and computer use at half Sol's price, and `gpt-6.1-sol` for most work. The models page still points unsure callers to `gpt-6-astra`
3. Move off the GPT-4o and GPT-4.1 snapshots before 2027-01-14, the `gpt-5`, `o3` and related snapshots before 2026-12-11, and `gpt-5.1`, `gpt-5.3-codex` and `gpt-5.4-nano` before 2027-04-01. Check `shutdown_date` on `GET /v1/models`
4. Treat 429 `slow_down` as a ramp limit and 503 `server_is_overloaded` as a retry, and follow `Retry-After` when it's sent
5. Prompts over 272K tokens cost double on input. Trim before you pay for it

### Simplismart

1. Point an OpenAI-compatible client at https://api.simplismart.live with SIMPLISMART_API_KEY as a Bearer token, and take model ids from the marketplace or the per-model API pages.
2. Set a key expiry and rotate before midnight UTC on the expiry date, because an expired key returns 401.
3. Cap retries yourself with exponential backoff, because no rate limits, 429 format or retry guidance are published.
4. Check that a model supports tools or JSON output with a test call before relying on it, because neither is documented.
5. Confirm the per-token price of the exact model in the console before running large jobs, because the public price list is incomplete.

## Questions

### Which is better for AI agents, OpenAI API or Simplismart?

OpenAI API scores 82.9 (A) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category.

### Do OpenAI API and Simplismart need an API key?

Both need an API key.

### Can an agent call OpenAI API and Simplismart without installing anything?

Yes. OpenAI API has a hosted endpoint at https://api.openai.com/v1 and Simplismart at https://api.simplismart.live.


## For agents

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