Gemini 1.5 Flash — Google | Modeldex

Gemini 1.5 Flash

Deprecated

Fast multimodal model from the Gemini 1.5 generation.

Updated 5 days agoStructured data from Modeldex catalog

VisionAgenticLong contextBudget

Not enough benchmark coverage yet for an Intelligence Index — needs at least 3 results across 2 categories.

Overview

Gemini 1.5 Flash was the cost-optimized variant of the 1.5 generation with 1M context. Superseded by Gemini 2 Flash.

History

Gemini 1.5 Flash was released on 2024-05-14. This model is marked as deprecated and may be retired in the future.

Training & availability

Google has not released the underlying model weights — access is via their hosted API only.

Capabilities

Context window: 1.0M tokens.
Max output: 8K tokens.
Input modalities: text, image, audio, video.

Recommended for: vision, agentic, long-context, cheap.

Pricing

Input: $0.0750 per 1M tokens
Output: $0.3000 per 1M tokens

Use the cost calculator above to estimate monthly spend for your workload.

Quick start

Minimal example using the google API. Copy, paste, replace the key.

from google import genai

client = genai.Client(api_key="...")
resp = client.models.generate_content(
    model="gemini-1.5-flash",
    contents="Explain quantum computing in one sentence.",
)
print(resp.text)

Cost calculator

Estimate your monthly bill. Presets are typical workload sizes.

Input tokens / month5.0M

@ $0.075/1M

Output tokens / month2.0M

@ $0.3/1M

Input cost

$0.375

5.0M × $0.075/1M

Output cost

$0.6

2.0M × $0.3/1M

Total / month

$0.975

$11.7 / year

Integrations & tooling support

Tool calling: Supported
Structured outputs: Supported

Price vs quality

Budget pricing

Priced low — good for high-volume tasks. Quality tier pending more benchmark coverage.