Google · in Borg

Gemini 2.5 Flash

Gemini 2.5 Flash is the middle member of Google's 2.5 family: less costly than Pro and more capable for involved work than Flash-Lite.

Reasoning1,048,576 tokenstext, image, video, audio

1,048,576 tokensContext window

3945 msMedian time to first token (gateway proxy)

142.4Output tokens per second (whole turn)

99.9%Request success

$0.3 / $2.5Vendor API price in / out · per 1M

Included in Borg

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At a glance

Specification	Value
Provider	Google
Family	Gemini
Release date	2025-04-17 Vendor source
Context window	1,048,576 tokens Vendor source
Input modalities	text, image, video, audio
Output modalities	text
Reasoning	Yes
Open weights	No
Knowledge cutoff	2025-01 Vendor source
Borg lane ids	`antigravity/gemini-2.5-flash`, `antigravity/gemini-2.5-flash-thinking`, `google/gemini-2.5-flash`
Versions in Borg	Gemini 2.5 Flash · Gemini 3 Flash · Gemini 3.5 Flash · Gemini 3.6 Flash · Gemini 3.7 Flash · Gemini 3.8 Flash
Median time to first token (gateway proxy) on Borg	3945 ms
Median tokens per second (end to end) on Borg	142.4 output tokens per second

Not published by the vendor: thinking modes, fusion roles.

What Gemini 2.5 Flash is good for

Gemini 2.5 Flash is the middle member of Google's 2.5 family: less costly than Pro and more capable for involved work than Flash-Lite. It combines adjustable thinking with a long multimodal input window, so it can inspect videos or audio alongside documents and still handle coding, extraction and multi-step tasks. Unlike the Lite variant, it is intended as a balanced choice for agentic work rather than the cheapest possible call. Google's API now limits new access to 2.5 models, which matters for external integrations but does not change the model's role in Borg. Borg includes its lanes in the subscription; Borg Fusion may route a suitable task to Flash, or you can select its lane directly when you want this particular balance of speed and reasoning.

multimodal document and video summaries
agentic coding with adjustable thinking
high-volume reasoning requests

How Borg uses it

Gemini 2.5 Flash is available as a subscription catalog lane in Borg. The catalog does not publish which Fusion profiles route to this model, so no routing role is claimed here. You can pick it directly by setting the OpenAI-compatible gateway model field to a listed lane id. Check the current catalog for availability before building a workflow around a lane.

model: "antigravity/gemini-2.5-flash"

Measured on Borg

Metric	Median	95th percentile	Samples
Time to first token (gateway proxy)	3945 ms	22297 ms	8744
Tokens per second (end to end)	142.4 output tokens per second	277.2 output tokens per second	150664
Request success rate	99.9%	—	12372

Time to first token (gateway proxy)

Lower is fasterFleet median 3971.5 ms

Gemini 2.5 Flash3945 ms

Output tokens per second (whole turn)

Higher is fasterFleet median 31.9 tokens/s

Gemini 2.5 Flash142.4 tokens/s

Time to first token (gateway proxy): time until the first streamed response event reaches the gateway; our closest available measure of time to first token
Tokens per second (end to end): tokens per second, end to end: provider-reported output tokens divided by the whole turn's elapsed time, including queueing and reasoning; not a streaming per-token rate

Share of requests Borg completed successfully, excluding requests the client cancelled.

Completion speed covers the whole turn including queueing and reasoning time; it is not a streaming tokens-per-second figure.

Measured on Borg: SearchAtlas AI Gateway production request logs. 30-day window ending 2026-10-08; 173478 requests. Minimum 100 samples per published request metric.

Pricing

Included in Borg subscription. Vendor API list price: $0.3 input / $2.5 output per 1M tokens. Vendor price source.

Input and cache rates shown are for text/image/video, not audio. Vendor pricing terms

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FAQ

What is Gemini 2.5 Flash?

Gemini 2.5 Flash is listed in Borg's subscription catalog as antigravity/gemini-2.5-flash. Gemini 2.5 Flash is the middle member of Google's 2.5 family: less costly than Pro and more capable for involved work than Flash-Lite.

Is Gemini 2.5 Flash in Borg?

Yes. Gemini 2.5 Flash is listed in Borg's subscription catalog under the lane antigravity/gemini-2.5-flash. You can choose the lane directly, or explore the available Fusion profiles. Availability and model details can change; check the current catalog before deployment.

What context window does Gemini 2.5 Flash have?

The published context window is 1,048,576 tokens. Consult the cited sources for details and current limits. Vendor source

Is Gemini 2.5 Flash good for coding?

No vendor-published coding evaluation is listed here. Its listed uses include multimodal document and video summaries, agentic coding with adjustable thinking, high-volume reasoning requests. Try the lane for your own tasks, and compare the output with your requirements before choosing a default.

How fast is Gemini 2.5 Flash on Borg?