KAT-Coder-Air V2.5
Kwaipilot · released Jul 10, 2026
- Type
- Closed
- Input
- None held
- Output
- None held
- Cached
- None held
We don't hold a list price for this model yet · hosted only — we have no record of published weights
Our take
Written Sep 5, 2026KAT-Coder-Air V2.5 is Kwaipilot's hosted-only coding assistant built for long-document code review and generation. It accepts up to 256,000 tokens in a single request, though no independent quality scores are available yet.
Pick this for long-context coding tasks where 256,000 tokens of source code or documentation fit in one pass, or if your team is already on OpenRouter or StreamLake infrastructure. Skip it if you need measured coding quality, want to self-host, or require verified throughput on every route.
The case for it
- 256,000-token request limit — among the largest we list for any coding-specialised model.
- Two hosted offers at the same price point, with StreamLake listing 50.5 tokens per second throughput.
The case against it
- No benchmark scores in our data — no coding Elo, HumanEval or SWE-bench results to judge quality by.
- Proprietary weights with no local option; you cannot self-host or fine-tune.
- Throughput is only verified on StreamLake; OpenRouter speed is undisclosed at identical pricing.
How good is it?
We hold no score for this model.
So there is no figure here for everyday use, coding, agent work or writing. That is a gap in our data, not a low score.
Where to rent it
Prices checked 31 days ago — each listing carries its own date.
- per 1M tokens
- $0.15 in / $0.60 out
- Context served
- 256K
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouterOpenRouter's own listing | $0.15 / $0.60checked 31 days ago | 256K | not measured | Unknown | Unknown | Unknown |
| StreamLakeThrough OpenRouter | $0.15 / $0.60checked 31 days ago | 256K | not measured | No | Yesunknown period | Unknown |
OpenRouterAcross the 2 listings we hold: 1 says it does not train on prompts, 0 say they do and 1 does not say. 0 appear in the zero-retention registry we check; the rest are unknown to us.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouterOpenRouter's own listing | ✓ | ✓ | ✓ |
| StreamLakeThrough OpenRouter | ✓ | ✓ | ✓ |
Tool calling: 2 of 2 listings say yes. JSON output: 2 of 2 listings say yes. Strict schema: 2 of 2 listings say yes.
When we formed this view
Recent changes
What moved
first indexed by our pipelineEach date is the day we first saw the change, or the day the maker announced it.
What we do not know about this model yet
- No independent board has scored it, so we hold no quality figures at all.
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 2 listings does not say whether it trains on prompts.
- We don't hold a list price for this model yet — the gap is ours, not the lab's.
- We hold no batch or off-peak rate for any of its listings.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
We hold no licence record for this model, and no record of published weights either — so we can neither summarise its terms nor point you at the weights.
Identifiers
- Takes in, gives back
- Text in, text out
- Catalogue slug
- kwaipilot-kat-coder-air-v2-5