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Gemini 2.5 Flash Lite Reasoning


Gemini 2.5 Flash Lite Reasoning is an AI model from Google. A Gemini 2.5 Flash Lite variant with reasoning mode enabled, combining lightweight efficiency with structured chain-of-thought capabilities.
Specifications
Canonical IDgoogle-gemini-2-5-flash-lite-reasoning
StatusActive
CreatorGoogleGoogle
Benchmarks
Intelligence Index
17.6
#245
Coding Index
9.5
#299
Math Index
53.3
#127
MMLU-Pro
0.8
#156
GPQA
0.6
#230
HLE
0.1
#201
LiveCodeBench
0.6
#109
AIME
0.7
#32
IFBench
0.5
#141
Time to First Token
19.78s
#450
SciCode
0.2
#333
MATH-500
1.0
#21
AIME 2025
0.5
#127
LCR
0.5
#126
TerminalBench Hard
0.0
#245
TAU2
0.2
#305
Output TPS

Capabilities

Input0/5
Text·
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Gemini 3.1 Flash Lite1.0M$0.250$1.50Available
Gemini 3.1 Flash Lite Preview1.0M$0.250$1.50Available
Gemini 3.1 Flash Lite Live$0.275$1.65Available
Gemini 3.1 Flash Lite Live Preview$0.250$1.50Available
Gemini 3.1 Flash Lite Live Tuned$0.412$2.48Available
Gemini 3.1 Flash Lite Tuned$0.412$2.48Available
Gemini 2.5 Flash Lite Preview1.0M$0.100$0.400Deprecated
Gemini 2.5 Flash Lite1.0M$0.075$0.300Available
Gemini 2.0 Flash Lite1.0M$0.075$0.300Deprecating
Gemini 2.5 Flash Lite ReasoningCurrent
Gemini 2.5 Flash Lite Preview ReasoningAvailable

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
Gemini 3.1 Pro Preview Custom ToolsPro1.0M$2.00$12.00
Gemini 3.1 Pro PreviewPro1.0M$2.00$12.00
Gemini 3 FlashFlash1.0M$0.500$3.00
Gemini 3 Flash PreviewFlash1.0M$0.500$3.00
Gemini 3 Pro PreviewPro1.0M$2.00$12.00
Gemini 3 Pro ImagePro66K$2.00$12.00
Gemini 3 Deep Think
Gemini 3 Flash ReasoningFlash
Gemini 3 ProPro$2.00$12.00
Gemini 3 Pro Preview LowPro

Model IDs