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Gemini 3.5 Flash Lite vs GPT-5 Mini

vs
GPT-5 Mini

OpenAI

64#199
Signal-by-Signal Comparison
SignalGemini 3.5 Flash LiteDeltaGPT-5 Mini
Capabilities
100
--
100
Benchmarks
75
+11
64
Pricing
98
0
98
Context window size
96
+7
89
Recency
100
+34
66
Output Capacity
80
-5
85
Overall Result
3 wins
of 6
2 wins
Gemini 3.5 Flash Lite wins 3 of 6 signals

Score History

Score History (24 data points)
Gemini 3.5 Flash LiteGPT-5 Mini
Gemini 3.5 Flash Lite

76.9

current score

Leader

Gemini 3.5 Flash Lite

right now

GPT-5 Mini

63.9

current score

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

Gemini 3.5 Flash Lite

Google

Per request$0.001550
Daily$5.17
Monthly$155.00
Annual$1860.00

GPT-5 Mini

OpenAI

Best Value
Per request$0.001250
Daily$4.17
Monthly$125.00
Annual$1500.00

GPT-5 Mini saves you $30.00/month

That's $360.00/year compared to Gemini 3.5 Flash Lite at your current usage level of 100K calls/month.

19% cheaper
Choose GPT-5 Mini for cost optimization

Gemini 3.5 Flash Lite pricing:
Input:$0.30/M tokens
Output:$2.50/M tokens
GPT-5 Mini pricing:
Input:$0.25/M tokens
Output:$2.00/M tokens
Winner
Gemini 3.5 Flash Lite

Google

77

Composite Score

GPT-5 Mini

OpenAI

64

Composite Score

Signal-by-Signal Comparison
MetricGemini 3.5 Flash LiteGPT-5 MiniWinner
Overall Score
77
64
Gemini 3.5 Flash Lite
Rank#112#199
Gemini 3.5 Flash Lite
Quality Rank#112#199
Gemini 3.5 Flash Lite
Adoption Rank#112#199
Gemini 3.5 Flash Lite
Parameters------
Context Window1049K400K
Gemini 3.5 Flash Lite
Pricing$0.30/$2.50/M$0.25/$2.00/M--
Signal Scores
Capabilities
100
100
Gemini 3.5 Flash Lite
Benchmarks
75
64
Gemini 3.5 Flash Lite
Pricing
98
98
GPT-5 Mini
Context window size
96
89
Gemini 3.5 Flash Lite
Recency
100
66
Gemini 3.5 Flash Lite
Output Capacity
80
85
GPT-5 Mini
Benchmark Head-to-Head(3 benchmarks)
Gemini 3.5: 1GPT-5 Mini: 0
Gemini 3.5
GPT-5 Mini
Normalized 0-100%
SWE-bench Verified
-59.8%
Arena Elo
14591390
HLE
-19.44%
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 3.5 Flash LiteStrong Performer

Scores 77/100 (rank #112), placing it in the top 62% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
GPT-5 MiniCompetitive

Scores 64/100 (rank #199), placing it in the top 32% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

Gemini 3.5 Flash Lite has a 13-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.

When to Use Each Model

Choose Gemini 3.5 Flash Lite when you need:

  • Processing long documents or large codebases (1049K token context)
  • Step-by-step reasoning and chain-of-thought problem solving

Choose GPT-5 Mini when you need:

  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Gemini 3.5 Flash Lite
Input cost$0.30/M tokens
Output cost$2.50/M tokens
Cost per quality point$0.036
Est. monthly (1M tokens/day)$42.00
GPT-5 MiniBest Value
Input cost$0.25/M tokens
Output cost$2.00/M tokens
Cost per quality point$0.035
Est. monthly (1M tokens/day)$33.75

GPT-5 Mini offers 20% better value per quality point. At 1M tokens/day, you'd spend $33.75/month with GPT-5 Mini vs $42.00/month with Gemini 3.5 Flash Lite - a $8.25 monthly difference.

Latency & Speed
Gemini 3.5 Flash LiteFaster
Speed score0/100
GPT-5 Mini
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 3.5 Flash Lite

Customer support chatbot

Suitable for user-facing chat with competitive response times. GPT-5 Mini also offers lower per-token costs for high-volume support

Gemini 3.5 Flash Lite

Long document analysis

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

Gemini 3.5 Flash Lite

Batch data extraction

Lower output pricing ($2.00/M) reduces costs when processing thousands of records daily

GPT-5 Mini

Creative writing & content

Higher overall composite score (77/100) correlates with better nuance, coherence, and style in long-form content

Gemini 3.5 Flash Lite

Image understanding & OCR

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

Gemini 3.5 Flash Lite
Which Should You Choose?
Our recommendation:
Gemini 3.5 Flash Lite

Gemini 3.5 Flash Lite clearly outperforms GPT-5 Mini with a significant 13.000000000000007-point lead. For most general use cases, Gemini 3.5 Flash Lite is the stronger choice. However, GPT-5 Mini 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 OpenAI

  • Choose for Cost - 20% lower pricing; better value at scale
Capability Comparison
CapabilityGemini 3.5 Flash LiteGPT-5 Mini
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 3.5 Flash Lite

Google

$3.54
estimated monthly cost

GPT-5 Mini

OpenAI

Best Value
$2.85
estimated monthly cost

GPT-5 Mini saves you $0.6900/month

That's 19% cheaper than Gemini 3.5 Flash Lite 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 3.5 Flash LiteGPT-5 Mini
Context Window1.0M400K
Max Output Tokens65,536128,000
Open SourceNoNo
CreatedJul 21, 2026Aug 7, 2025
Last updated: 49m ago

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