# Verify GPT-6.1 Sol Endpoints

Check that an endpoint selling GPT-6.1 Sol really serves it. A test compares the endpoint's answers with answers collected from OpenAI, through OpenRouter pinned to OpenAI.

- **Official Provider:** OpenAI, through OpenRouter pinned to OpenAI
- **Reference Answers:** 1,000
- **Declared Precision:** closed model
- **Checks:** Identity
- **Reference Data Updated:** 2026-10-16

## How Well a Test Works

| Size | Requests | Genuine Confirmed | Wrongly Flagged | Substitutes Caught |
|---|---|---|---|---|
| Standard | 80 | 57.7% | 0.5% | 32.8% · hardest GPT-6 Astra |
| Thorough | 160 | 93.2% | 0.5% | 86.4% · hardest GPT-6 Astra |

Simulated from the reference answers. A substitute that isn't caught ends inconclusive: it is never confirmed as this model.

## Notes

- GPT-6.1 Sol and GPT-6 Astra answer almost alike: at Standard a genuine endpoint is confirmed in only 57.7% of tests, at Thorough in 93.2%. The rest end inconclusive; neither model is ever confirmed in the other's place. Test it at Thorough.
- No refusal check: GPT-6.1 Sol's weights aren't published, so nobody can abliterate it.
- No competence check yet: the competence check needs hard tasks collected from the official provider, which this model doesn't have.

## Guides

- [How the Identity Check Works](https://llm-id.sh/docs/identity)
- [Testing an Endpoint](https://llm-id.sh/docs/testing-an-endpoint)
- [Limits](https://llm-id.sh/docs/limits)

Test a GPT-6.1 Sol endpoint: https://llm-id.sh/app#new

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From llm-id.sh: https://llm-id.sh/models/gpt-6.1-sol