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Gemini 3.1 Flash Lite Preview vs Gemini 3.5 Flash

Signal-by-Signal Comparison
SignalGemini 3.1 Flash Lite PreviewDeltaGemini 3.5 Flash
Capabilities
100
--
100
Benchmarks
79
+2
77
Pricing
99
+8
91
Context window size
86
--
86
Recency
100
--
100
Output Capacity
80
--
80
Overall Result
2 wins
of 6
0 wins
Gemini 3.1 Flash Lite Preview wins 2 of 6 signals

Score History

Score History (20 data points)
Gemini 3.1 Flash Lite PreviewGemini 3.5 Flash
Gemini 3.1 Flash Lite Preview

78.9

current score

Leader

Gemini 3.1 Flash Lite Preview

right now

Gemini 3.5 Flash

78.5

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

Gemini 3.1 Flash Lite Preview

Google

Best Value
Per request$0.001000
Daily$3.33
Monthly$100.00
Annual$1200.00

Gemini 3.5 Flash

Google

Per request$0.006000
Daily$20.00
Monthly$600.00
Annual$7200.00

Gemini 3.1 Flash Lite Preview saves you $500.00/month

That's $6000.00/year compared to Gemini 3.5 Flash at your current usage level of 100K calls/month.

83% cheaper
Choose Gemini 3.1 Flash Lite Preview for cost optimization

Gemini 3.1 Flash Lite Preview pricing:
Input:$0.25/M tokens
Output:$1.50/M tokens
Gemini 3.5 Flash pricing:
Input:$1.50/M tokens
Output:$9.00/M tokens
Winner
Gemini 3.1 Flash Lite Preview

Google

79

Composite Score

Gemini 3.5 Flash

Google

79

Composite Score

Signal-by-Signal Comparison
MetricGemini 3.1 Flash Lite PreviewGemini 3.5 FlashWinner
Overall Score
79
79
Gemini 3.1 Flash Lite Preview
Rank#48#54
Gemini 3.1 Flash Lite Preview
Quality Rank#48#54
Gemini 3.1 Flash Lite Preview
Adoption Rank#48#54
Gemini 3.1 Flash Lite Preview
Parameters------
Context Window1049K1049K--
Pricing$0.25/$1.50/M$1.50/$9.00/M--
Signal Scores
Capabilities
100
100
Gemini 3.1 Flash Lite Preview
Benchmarks
79
77
Gemini 3.1 Flash Lite Preview
Pricing
99
91
Gemini 3.1 Flash Lite Preview
Context window size
86
86
Gemini 3.1 Flash Lite Preview
Recency
100
100
Gemini 3.1 Flash Lite Preview
Output Capacity
80
80
Gemini 3.1 Flash Lite Preview
Benchmark Head-to-Head(2 benchmarks)
Gemini 3.1: 0Gemini 3.5: 1
Gemini 3.1
Gemini 3.5
Normalized 0-100%
MMLU-Pro
86.2%-
Arena Elo
14331477
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

Gemini 3.1 Flash Lite PreviewStrong Performer

Scores 79/100 (rank #48), placing it in the top 84% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Gemini 3.5 FlashStrong Performer

Scores 79/100 (rank #54), placing it in the top 82% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.

When to Use Each Model

Choose Gemini 3.1 Flash Lite Preview when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving

Choose Gemini 3.5 Flash when you need:

  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Gemini 3.1 Flash Lite PreviewBest Value
Input cost$0.25/M tokens
Output cost$1.50/M tokens
Cost per quality point$0.022
Est. monthly (1M tokens/day)$26.25
Gemini 3.5 Flash
Input cost$1.50/M tokens
Output cost$9.00/M tokens
Cost per quality point$0.134
Est. monthly (1M tokens/day)$157.50

Gemini 3.1 Flash Lite Preview offers 83% better value per quality point. At 1M tokens/day, you'd spend $26.25/month with Gemini 3.1 Flash Lite Preview vs $157.50/month with Gemini 3.5 Flash - a $131.25 monthly difference.

Latency & Speed
Gemini 3.1 Flash Lite PreviewFaster
Speed score0/100
Gemini 3.5 Flash
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

Gemini 3.1 Flash Lite Preview

Customer support chatbot

Suitable for user-facing chat with competitive response times. Gemini 3.1 Flash Lite Preview also offers lower per-token costs for high-volume support

Gemini 3.1 Flash Lite Preview

Long document analysis

Larger context window (1049K tokens) can process longer documents, contracts, and research papers in a single pass

Gemini 3.1 Flash Lite Preview

Batch data extraction

Lower output pricing ($1.50/M) reduces costs when processing thousands of records daily

Gemini 3.1 Flash Lite Preview

Creative writing & content

Higher overall composite score (79/100) correlates with better nuance, coherence, and style in long-form content

Gemini 3.1 Flash Lite Preview

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

Gemini 3.1 Flash Lite Preview
Which Should You Choose?
Our recommendation:
Gemini 3.1 Flash Lite Preview

Gemini 3.1 Flash Lite Preview and Gemini 3.5 Flash are extremely close in overall performance (only 0.4000000000000057 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.

by Google

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 83% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale

by Google

Consider for specialized use cases.

Capability Comparison
CapabilityGemini 3.1 Flash Lite PreviewGemini 3.5 Flash
Vision (Image Input)
Function Calling
Streaming
JSON Mode
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Gemini 3.1 Flash Lite Preview

Google

Best Value
$2.25
estimated monthly cost

Gemini 3.5 Flash

Google

$13.50
estimated monthly cost

Gemini 3.1 Flash Lite Preview saves you $11.25/month

That's 83% cheaper than Gemini 3.5 Flash at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterGemini 3.1 Flash Lite PreviewGemini 3.5 Flash
Context Window1.0M1.0M
Max Output Tokens65,53665,536
Open SourceNoNo
CreatedMar 3, 2026May 19, 2026
Last updated: 44m ago

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Gemini 3.1 Flash Lite Preview vs Gemini 3.5 Flash (2026) | LM Market Cap