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Gemini 3.1 Pro Preview (batch) vs Gemini 3.5 Flash Lite (batch)

Signal-by-Signal Comparison
SignalGemini 3.1 Pro Preview (batch)DeltaGemini 3.5 Flash Lite (batch)
Capabilities
100
--
100
Benchmarks
92
+17
75
Pricing
94
-5
99
Context window size
96
--
96
Recency
100
--
100
Output Capacity
80
--
80
Overall Result
1 wins
of 6
1 wins
It's a tie - both models win 1 signals each

Score History Unavailable

Not enough historical data to show a comparison chart. Score history is recorded weekly and will be available after at least two data points are collected.

92.2

Gemini 3.1 Pro Preview (batch)

vs

77

Gemini 3.5 Flash Lite (batch)

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

Gemini 3.1 Pro Preview (batch)

Google

Per request$0.004000
Daily$13.33
Monthly$400.00
Annual$4800.00

Gemini 3.5 Flash Lite (batch)

Google

Best Value
Per request$0.000775
Daily$2.58
Monthly$77.50
Annual$930.00

Gemini 3.5 Flash Lite (batch) saves you $322.50/month

That's $3870.00/year compared to Gemini 3.1 Pro Preview (batch) at your current usage level of 100K calls/month.

81% cheaper
Choose Gemini 3.5 Flash Lite (batch) for cost optimization

Gemini 3.1 Pro Preview (batch) pricing:
Input:$1.00/M tokens
Output:$6.00/M tokens
Gemini 3.5 Flash Lite (batch) pricing:
Input:$0.15/M tokens
Output:$1.25/M tokens
Winner
Gemini 3.1 Pro Preview (batch)

Google

92

Composite Score

Gemini 3.5 Flash Lite (batch)

Google

77

Composite Score

Signal-by-Signal Comparison
MetricGemini 3.1 Pro Preview (batch)Gemini 3.5 Flash Lite (batch)Winner
Overall Score
92
77
Gemini 3.1 Pro Preview (batch)
Rank#16#98
Gemini 3.1 Pro Preview (batch)
Quality Rank#16#98
Gemini 3.1 Pro Preview (batch)
Adoption Rank#16#98
Gemini 3.1 Pro Preview (batch)
Parameters------
Context Window1049K1049K--
Pricing$1.00/$6.00/M$0.15/$1.25/M--
Signal Scores
Capabilities
100
100
Gemini 3.1 Pro Preview (batch)
Benchmarks
92
75
Gemini 3.1 Pro Preview (batch)
Pricing
94
99
Gemini 3.5 Flash Lite (batch)
Context window size
96
96
Gemini 3.1 Pro Preview (batch)
Recency
100
100
Gemini 3.1 Pro Preview (batch)
Output Capacity
80
80
Gemini 3.1 Pro Preview (batch)
Benchmark Head-to-Head(5 benchmarks)
Gemini 3.1: 1Gemini 3.5: 0
Gemini 3.1
Gemini 3.5
Normalized 0-100%
MMLU
92.6%-
MMLU-Pro
91.2%-
GPQA Diamond
94.3%-
SWE-bench Verified
80.6%-
Arena Elo
14941460
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 Pro Preview (batch)Elite Tier

Scores 92/100 (rank #16), placing it in the top 95% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Gemini 3.5 Flash Lite (batch)Strong Performer

Scores 77/100 (rank #98), placing it in the top 67% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

Gemini 3.1 Pro Preview (batch) has a 15-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose Gemini 3.1 Pro Preview (batch) when you need:

  • Step-by-step reasoning and chain-of-thought problem solving

Choose Gemini 3.5 Flash Lite (batch) when you need:

  • High-volume production workloads where API costs must be minimized
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Gemini 3.1 Pro Preview (batch)
Input cost$1.00/M tokens
Output cost$6.00/M tokens
Cost per quality point$0.076
Est. monthly (1M tokens/day)$105.00
Gemini 3.5 Flash Lite (batch)Best Value
Input cost$0.15/M tokens
Output cost$1.25/M tokens
Cost per quality point$0.018
Est. monthly (1M tokens/day)$21.00

Gemini 3.5 Flash Lite (batch) offers 80% better value per quality point. At 1M tokens/day, you'd spend $21.00/month with Gemini 3.5 Flash Lite (batch) vs $105.00/month with Gemini 3.1 Pro Preview (batch) - a $84.00 monthly difference.

Latency & Speed
Gemini 3.1 Pro Preview (batch)Faster
Speed score0/100
Gemini 3.5 Flash Lite (batch)
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 Pro Preview (batch)

Customer support chatbot

Suitable for user-facing chat with competitive response times. Gemini 3.5 Flash Lite (batch) also offers lower per-token costs for high-volume support

Gemini 3.1 Pro Preview (batch)

Long document analysis

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

Gemini 3.1 Pro Preview (batch)

Batch data extraction

Lower output pricing ($1.25/M) reduces costs when processing thousands of records daily

Gemini 3.5 Flash Lite (batch)

Creative writing & content

Higher overall composite score (92/100) correlates with better nuance, coherence, and style in long-form content

Gemini 3.1 Pro Preview (batch)

Image understanding & OCR

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

Gemini 3.1 Pro Preview (batch)
Which Should You Choose?
Our recommendation:
Gemini 3.1 Pro Preview (batch)

Gemini 3.1 Pro Preview (batch) clearly outperforms Gemini 3.5 Flash Lite (batch) with a significant 15.200000000000003-point lead. For most general use cases, Gemini 3.1 Pro Preview (batch) is the stronger choice. However, Gemini 3.5 Flash Lite (batch) may still excel in niche scenarios.

by Google

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • 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

  • Choose for Cost - 80% lower pricing; better value at scale
Capability Comparison
CapabilityGemini 3.1 Pro Preview (batch)Gemini 3.5 Flash Lite (batch)
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 Pro Preview (batch)

Google

$9.00
estimated monthly cost

Gemini 3.5 Flash Lite (batch)

Google

Best Value
$1.77
estimated monthly cost

Gemini 3.5 Flash Lite (batch) saves you $7.23/month

That's 80% cheaper than Gemini 3.1 Pro Preview (batch) 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 Pro Preview (batch)Gemini 3.5 Flash Lite (batch)
Context Window1.0M1.0M
Max Output Tokens65,53665,536
Open SourceNoNo
CreatedFeb 19, 2026Jul 21, 2026
Last updated: 22m ago

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