| Name | Stage | Founded |
|---|---|---|
| Aporia | acquired | 2019 |
| Braintrust | seed | 2023 |
| Composable | seed | 2024 |
| Gentrace | Series A | 2023 |
| Humanloop | seed | 2020 |
| Klu | pre-seed | 2022 |
| Langfuse | seed | 2022 |
| Openlayer | seed | 2021 |
| Promptfoo | seed | 2024 |
| PromptLayer | pre-seed | 2021 |
| Velvet | pre-seed | 2023 |
| Name | Average output | Total all time |
|---|---|---|
| Braintrust | 1.0 | 36 |
| Composable | 0.8 | 20 |
| Aporia | 0.7 | 58 |
| Gentrace | Not yet available. | Not yet available. |
| Humanloop | Not yet available. | Not yet available. |
| Klu | Not yet available. | Not yet available. |
| Langfuse | Not yet available. | Not yet available. |
| Openlayer | Not yet available. | Not yet available. |
| Promptfoo | Not yet available. | Not yet available. |
| PromptLayer | Not yet available. | Not yet available. |
| Velvet | Not yet available. | Not yet available. |