Gemini 2.5 Flash Native Audio (Live, preview)
Speech and audio
gemini-2.5-flash-native-audio-preview-12-2025
$0.50 in, $2 out per 1M tokens
Gemini 2.5 Flash
2025 workhorse model; legacy. Use gemini-3.8-flash or gemini-3.5-flash-lite for new work.
Model idgemini-2.5-flash
Price$0.30 in, $2.50 out per 1M tokens
Checked29 September 2026
Knows up to January 2025
2,037events after its cutoff
90 historic, 476 major. 651 days of news.
It launched on 17 June 2025, already missing 19 of them. Coverage before 2026 is thin (80 entries for 2025), so this count is a floor.
Five things it has never heard of
Its cutoff, January 2025, is before this chart starts: every mark here is news it has never seen.
How to call it
3 ways to use Gemini 2.5 Flash, with the model id each provider expects.
| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Gemini API | gemini-2.5-flash |
https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent |
ai.google.dev |
| Google Cloud Gemini Enterprise Agent Platform (Vertex AI) | gemini-2.5-flash |
docs.cloud.google.com | |
| OpenRouter | google/gemini-2.5-flash |
Pricing
| Input | $0.30 per 1M tokens |
|---|---|
| Output | $2.50 per 1M tokens |
As published: “per 1M tokens (Standard; text/image/video input; audio input $1.00)”.
Source: ai.google.dev, checked 29 September 2026.
Specs
- Input
- Text, images, audio and video
- Output
- Text
- Context window
- 1,048,576 tokens
- Max output
- 65,536 tokens
- Open weights
- No
- Licence
- Proprietary
- Training cutoff
- January 2025
- Released
- 17 June 2025
- Status
- Legacy
- Type
- Reasoning model
What stands out
What its maker marketed at launch, and what people found later, each with its source.
Hybrid reasoning with thinking budget
Thinking can be controlled per request; 1M-token multimodal context at low price.
First fully hybrid reasoning model (Google)
Google’s first model where thinking can be switched on/off, with a 0-24,576 token thinking budget.
Four assistants, one scale
Gemini 2.5 Flash is added as a fifth row. Each row runs from what the model knows (graphite) through the months between its cutoff and its launch (hatched) to today (pink).
- GPT-6 Astra 271 at launch, 1,863 today
- Claude Opus 5.5 372 at launch, 1,795 today
- Gemini 4 Hydrogen 1,863 at launch, 1,889 today
- Grok 4.7 387 at launch, 1,829 today
- Gemini 2.5 Flash 19 at launch, 2,037 today
Show as a table
| Model | Cutoff | Released | Missing at launch | Missing today |
|---|---|---|---|---|
| GPT-6 Astra | April 2026 | 3 September 2026 | 271 | 1,863 |
| Claude Opus 5.5 | June 2026 | 22 September 2026 | 372 | 1,795 |
| Gemini 4 Hydrogen | March 2026 | 12 November 2026 | 1,863 | 1,889 |
| Grok 4.7 | May 2026 | 21 September 2026 | 387 | 1,829 |
| Gemini 2.5 Flash | January 2025 | 17 June 2025 | 19 | 2,037 |
Notes
Preview 2025-04-17, GA 2025-06-17. No shutdown date, but access limited to prior users; replacement 3.5 Flash-Lite or 3.8 Flash.
curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent" \
-H "x-goog-api-key: $GEMINI_API_KEY" -H "Content-Type: application/json" \
-d '{"contents":[{"parts":[{"text":"Hello"}]}]}'
Sources: model page, pricing, deprecations.