Viv Fast
Summary
Viv Fast is a proprietary language model from Vivgrid, released on 21 Sept 2026. It accepts text and images and generates text, with a 1M-token context window and up to 256K output tokens per response.
Fast coding model
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Vivgrid |
|---|---|
| Release date | 21 Sept 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 1M (1,000,000 tokens) [models.dev] |
| Max output | 256K tokens [models.dev] |
| Knowledge cutoff | Sept 2026 [models.dev] |
| Input | Text and images [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
Viv Fast API pricing by provider
USD per million tokens. Sorted by input price.
We do not currently track a paid API listing for this model.
Frequently asked questions
What is the context window of Viv Fast?
Viv Fast has a context window of 1,000,000 tokens (1M) and can generate up to 256,000 tokens in a single response, according to models.dev.
Is Viv Fast open source?
No. Viv Fast is a proprietary model; Vivgrid has not released its weights.
When was Viv Fast released?
Vivgrid released Viv Fast on 21 Sept 2026, according to models.dev.
Change history
No changes detected since we started tracking this model. We re-check every source daily.