KAT-Coder-Air V2.5
Kuaishou
- Released
- July 10, 2026
- Data date
- September 8, 2026
- Price
- Historical rates under Costs
- Input
- Text
- Output
- Text
KAT-Coder-Air V2.5 is the fast API variant in a family trained around executable environments and verifiable agent tasks. The technical report uses AutoBuilder and KwaiClawEnv to represent that focus on real repository steps. Air offers a 256K context, up to 80K output tokens, and tool calling; public StreamLake documentation gives neither a parameter count nor a weight release.
Specifications and access
| Specification | Value and source |
|---|---|
| Weights | ProprietarySource |
| Context window | 256,000 tokensSource |
| Notes | Current KAT-Coder serving tier with a 256K context window; parameter count is not published.Source |
| Release | 2026-07-10Source |
| Maximum output | 80,000 tokensSource |
| API model ID | kat-coder-air-v2.5Source |
| Tool calling | YesSource |
Measurements without matching peer values
These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.
SWE-Bench (Show measurement, test conditions, and source)
- Source value
- 42.4
- Score
- 42.4
- Metric
- percent
- Unit
- %
- Category
- coding
- Direction
- Higher is better
- Source type
- vendor-reported
- Evaluator
- Vercel AI Gateway KAT-Coder-Air V2.5 page
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Vendor-reported result. Vendor card; exact harness, snapshot and pass protocol not stated.
Popularity
23.5 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Input | Documented modalities. Retrieved September 18, 2026. |
| Output | Documented modalities. Retrieved September 18, 2026. |
| Research status | Research date September 8, 2026. 4 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not found in the inspected sources | total-parameters-billions Original wording No parameter count is published for the proprietary Air endpoint in the checked exact-model pages. |
| Not found in the inspected sources | active-parameters-billions Original wording No active-parameter count is published for the proprietary Air endpoint. |
| Not found in the inspected sources | architecture Original wording Architecture details are not disclosed on the checked exact-model pages. |
| Not found in the inspected sources | license Original wording No model-weight license is published; the endpoint is presented as a proprietary provider model. |
| Not found in the inspected sources | knowledge-cutoff Original wording No knowledge-cutoff date is published on the checked exact-model pages. |
| Unresolved | AA benchmark rows Original wording No exact Artificial Analysis model page located in the checked public sitemap. |
| Additional source | Model metadata · KAT-Coder Air V2.5 model listing · Editorial description reviewed October 2, 2026 |
| Additional source | API pricing (retrieved September 8, 2026) |
| Additional source | KAT-Coder V2.5 technical report · Editorial description reviewed October 2, 2026 |
| Additional source | KAT-Coder Air V2.5 gateway page · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |