Deep Research Preview (Apr-21-2026)
Summary
Deep Research Preview (Apr-21-2026) is a proprietary language model from Google DeepMind, released on 21 Apr 2026. It accepts text, images, video, audio and PDFs and generates text and images, with a 131K-token context window and up to 66K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $2 per million input tokens and $12 per million output tokens (Gemini API), across 1 provider we track.
Agentic model for autonomous multi-step research, synthesis, and cited reports
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Google DeepMind |
|---|---|
| Release date | 21 Apr 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 131K (131,072 tokens) [models.dev] |
| Max output | 66K tokens [models.dev] |
| Knowledge cutoff | Jan 2025 [models.dev] |
| Input | Text, images, video, audio and PDFs [models.dev] |
| Output | Text and images [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
Deep Research Preview (Apr-21-2026) API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Gemini API deep-research-preview-04-2026 | $2 | $12 | $0.20 | 131K | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of Deep Research Preview (Apr-21-2026)?
Deep Research Preview (Apr-21-2026) has a context window of 131,072 tokens (131K) and can generate up to 65,536 tokens in a single response, according to models.dev.
How much does the Deep Research Preview (Apr-21-2026) API cost?
Through Gemini API, Deep Research Preview (Apr-21-2026) costs $2 per million input tokens and $12 per million output tokens. Prices last verified 4 Oct 2026.
Is Deep Research Preview (Apr-21-2026) open source?
No. Deep Research Preview (Apr-21-2026) is a proprietary model; Google DeepMind has not released its weights. It is available through APIs including Gemini API.
When was Deep Research Preview (Apr-21-2026) released?
Google DeepMind released Deep Research Preview (Apr-21-2026) on 21 Apr 2026, according to models.dev.
Change history
No changes detected since we started tracking this model. We re-check every source daily.