Which model is better: Gemini 3.5 Flash-Lite or Gemini 3.8 Flash?
Gemini 3.5 Flash-Lite is 70.0% cheaper for input tokens ($0.07 vs. $0.25 per 1M tokens) and $0.30 vs. $1.50 for output tokens (3.3x cost advantage). In terms of operational performance, Gemini 3.5 Flash-Lite delivers lower response latency at 78ms TTFT (27ms faster than Gemini 3.8 Flash) with 265 vs. 210 tok/s throughput. Gemini 3.8 Flash leads coding evaluations at 68.5% SWE-bench Verified vs. 55.4% for Gemini 3.5 Flash-Lite and 79.2% vs. 68.4% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.
Zero-Shot RAG Verified
Verified Performance & Unit Economics Delta (12 Dimensions)
Daily synchronized metrics across token pricing, prompt cache economics, latency, throughput, and 5 capability benchmarks.
Metric / Dimension
Gemini 3.5 Flash-Lite
Gemini 3.8 Flash
Net Delta / Advantage
Input Cost / 1M Tokens
$0.07
$0.25
Gemini 3.5 Flash-Lite is 3.3x cheaper
Output Cost / 1M Tokens
$0.30
$1.50
Gemini 3.5 Flash-Lite (80.0% lower)
Prompt Cache Read / 1M
$0.015
$0.025
Gemini 3.5 Flash-Lite is 1.7x cheaper
Prompt Cache Write / 1M
$0.07
$0.25
Gemini 3.5 Flash-Lite is 3.3x cheaper
Context Window (Max Output)
1,049k (33k out)
1,049k (66k out)
Equal Context Window
Avg TTFT Response Latency
78ms
105ms
Gemini 3.5 Flash-Lite (27ms faster)
Generation Speed (Throughput)
265 tok/s
210 tok/s
Gemini 3.5 Flash-Lite (+55 tok/s faster)
SWE-bench Verified (Coding)
55.4%
68.5%
Gemini 3.8 Flash (+13.1% lead)
GPQA Diamond (PhD STEM)
68.4%
79.2%
Gemini 3.8 Flash (+10.8% lead)
MMLU-Pro (Multi-Discipline)
80.1%
87.4%
Gemini 3.8 Flash (+7.3% lead)
MATH-500 (Quantitative Logic)
90.2%
95.1%
Gemini 3.8 Flash (+4.9% lead)
Inference Value Score (IVR)
81.5 / 100
74 / 100
Gemini 3.5 Flash-Lite (+7.5 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
Choose Gemini 3.8 Flash (Google) for high-throughput agentic workflows, real-time multimodal RAG, live search grounding, and production code generation at flash unit economics — offering a 1,048k context window, 105ms TTFT, and $0.25/1M input pricing ($0.025/1M cached reads).
Which is cheaper: Gemini 3.5 Flash-Lite or Gemini 3.8 Flash?
Gemini 3.5 Flash-Lite is cheaper at $0.075/1M input tokens ($0.30/1M output) compared to $0.25/1M input ($1.50/1M output) for Gemini 3.8 Flash.
Which model has lower TTFT latency and higher tok/s throughput: Gemini 3.5 Flash-Lite or Gemini 3.8 Flash?
Gemini 3.5 Flash-Lite delivers faster first-token latency at 78ms TTFT (265 tok/s throughput) compared to 105ms TTFT (210 tok/s) for Gemini 3.8 Flash.
How do Gemini 3.5 Flash-Lite and Gemini 3.8 Flash compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Gemini 3.5 Flash-Lite scores 55.4% versus 68.5% for Gemini 3.8 Flash. On GPQA Diamond graduate-level STEM reasoning, Gemini 3.5 Flash-Lite scores 68.4% versus 79.2% for Gemini 3.8 Flash (and 90.2% vs 95.1% on MATH-500).
When should you choose Gemini 3.5 Flash-Lite?
Choose Gemini 3.5 Flash-Lite (Google) for high-frequency data pipelines, real-time routing, large-scale document tagging, and ultra-low-cost conversational assistants — offering a 1,048k context window, 78ms TTFT, and $0.07/1M input pricing ($0.015/1M cached reads).
When should you choose Gemini 3.8 Flash?
Choose Gemini 3.8 Flash (Google) for high-throughput agentic workflows, real-time multimodal RAG, live search grounding, and production code generation at flash unit economics — offering a 1,048k context window, 105ms TTFT, and $0.25/1M input pricing ($0.025/1M cached reads).
