Gemini 3.1 Flash Lite Preview vs Gemini 3.1 Flash Lite

API pricing, benchmark indices and specs — updated 19 October 2026.

google · A · API-only

Input / 1M

$0.25

Output / 1M

$1.50

AA index

15.6

proprietary · 1M context

google · B · API-only

Input / 1M

$0.25

Output / 1M

$1.50

AA index

—

proprietary · 1M context

Specification comparison

Differences are highlighted; identical values are muted.

Specification	Gemini 3.1 Flash Lite Preview	Gemini 3.1 Flash Lite
Deployment	API-only (closed weights)	API-only (closed weights)
Parameters	n/a — API-only	n/a — API-only
Architecture	n/a — API-only	n/a — API-only
Context length	1,048,576	1,048,576
Licence	Proprietary	Proprietary
Commercial use	Per API terms	Per API terms
Languages	n/a — API-only	n/a — API-only
Downloads 30d	n/a — API-only	n/a — API-only
Downloads all time	n/a — API-only	n/a — API-only
Quantizations on the Hub	n/a — API-only	n/a — API-only
Gated	n/a — API-only	n/a — API-only
First seen on the Hub	n/a — API-only	n/a — API-only
API input price / 1M tokens	$0.25	$0.25
API output price / 1M tokens	$1.50	$1.50
Est. cost per 1M input + 1M output tokens	$1.75	$1.75
Cached input / 1M tokens	$0.025	$0.025
AA Intelligence Index	15.6	—
AA Coding Index	34.7	—
AA Agentic Index	1.6	—
Max output tokens	65,536	65,536
API providers	1	2
Tool calling	Yes	Yes
Reasoning mode	Yes	Yes

Estimated cost of 1M input + 1M output tokens via OpenRouter

Gemini 3.1 Flash Lite Preview $1.75

Gemini 3.1 Flash Lite $1.75