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Gemini 3.1 Flash-Lite vs Gemini 3.8 Flash

Gemini 3.8 Flash leads the LLM Stats Score 49.0 to 30.5. Gemini 3.1 Flash-Lite is 2.7x cheaper per token.

Google · Google · Updated for 2026

Which is better?

Gemini 3.8 Flash leads the overall LLM Stats Score 49.0 to 30.5, ranking #26 overall.

In the 1 individual benchmarks reported for both models, Gemini 3.8 Flash wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, Gemini 3.1 Flash-Lite is roughly 2.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.8 Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 3.1 Flash-Lite

  • cost matters — it's about 2.7x cheaper per token

Choose Gemini 3.8 Flash

  • overall performance matters — it scores 49.0 and ranks #26 on LLM Stats
  • your work emphasizes reasoning and agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

Gemini 3.1 Flash-Lite
Google
Gemini 3.8 Flash
Google
Core performance indexes
LLM Stats Score
30.5
#139
49.0
#26
Reasoning
30.9
#132
46.5
#30
Agents
10.4
#137
33.9
#30
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$0.25 / M
$0.75 / M
Output price
$1.50 / M
$3.75 / M
Context window
1,000,000
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Gemini 3.1 Flash-Lite
Gemini 3.8 Flash
Vision
17.6#101
33.3#21
Multimodal
22.5#72
34.2#17
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

11 reported for Gemini 3.1 Flash-Lite · 13 for Gemini 3.8 Flash

1 shared

Gemini 3.1 Flash-Lite outperforms in 0 benchmarks, while Gemini 3.8 Flash is better at 1 benchmark (CharXiv-R).

Gemini 3.8 Flash significantly outperforms across most benchmarks.

Thu Oct 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3.1 Flash-Lite costs less

For input processing, Gemini 3.1 Flash-Lite ($0.25/1M tokens) is 3.0x cheaper than Gemini 3.8 Flash ($0.75/1M tokens).

For output processing, Gemini 3.1 Flash-Lite ($1.50/1M tokens) is 2.5x cheaper than Gemini 3.8 Flash ($3.75/1M tokens).

In conclusion, Gemini 3.8 Flash is more expensive than Gemini 3.1 Flash-Lite.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Oct 22 2026 • llm-stats.com
Google
Gemini 3.1 Flash-Lite
Input tokens$0.25
Output tokens$1.50
Best providerDeepinfra
Google
Gemini 3.8 Flash
Input tokens$0.75
Output tokens$3.75
Best providerGoogle
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Gemini 3.8 Flash accepts 1,048,576 input tokens compared to Gemini 3.1 Flash-Lite's 1,000,000 tokens. Gemini 3.1 Flash-Lite can generate longer responses up to 1,000,000 tokens, while Gemini 3.8 Flash is limited to 65,536 tokens.

Google
Gemini 3.1 Flash-Lite
Input1,000,000 tokens
Output1,000,000 tokens
Google
Gemini 3.8 Flash
Input1,048,576 tokens
Output65,536 tokens
Thu Oct 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 3.1 Flash-Lite and Gemini 3.8 Flash support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3.1 Flash-Lite

Text
Images
Audio
Video

Gemini 3.8 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3.1 Flash-Lite

Proprietary

Closed source

Gemini 3.8 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.1 Flash-Lite was released on 2026-03-03, while Gemini 3.8 Flash was released on 2026-09-02.

Gemini 3.8 Flash is 6 months newer than Gemini 3.1 Flash-Lite.

Gemini 3.1 Flash-Lite

Mar 3, 2026

7 months ago

Gemini 3.8 Flash

Sep 2, 2026

1 months ago

6mo newer

Knowledge Cutoff

When training data ends

Gemini 3.1 Flash-Lite has a knowledge cutoff of 2025-01-31, while Gemini 3.8 Flash has a cutoff of 2026-03-31.

Gemini 3.8 Flash has more recent training data (up to 2026-03-31), making it potentially better informed about events through that date compared to Gemini 3.1 Flash-Lite (2025-01-31).

Gemini 3.1 Flash-Lite

Jan 2025

Gemini 3.8 Flash

Mar 2026

1.2 yr newer

Provider Availability

Gemini 3.1 Flash-Lite is available from DeepInfra, Google. Gemini 3.8 Flash is available from Google.

Gemini 3.1 Flash-Lite

deepinfra logo
Deepinfra
Input Price:Input: $0.25/1MOutput Price:Output: $1.50/1M
google logo
Google
Input Price:Input: $0.25/1MOutput Price:Output: $1.50/1M

Gemini 3.8 Flash

google logo
Google
Input Price:Input: $0.75/1MOutput Price:Output: $3.75/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 3.1 Flash-Lite and Gemini 3.8 Flash side-by-side, then vote on the output you prefer.

Gemini 3.1 Flash-Lite
✓ Preferred
Gemini 3.8 Flash
Open in Playground

FAQ

Common questions about Gemini 3.1 Flash-Lite vs Gemini 3.8 Flash.

Which is better, Gemini 3.1 Flash-Lite or Gemini 3.8 Flash?

Gemini 3.8 Flash leads the LLM Stats Score 49.0 to 30.5. Gemini 3.1 Flash-Lite is made by Google and Gemini 3.8 Flash is made by Google. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 3.1 Flash-Lite compare to Gemini 3.8 Flash in benchmarks?

Gemini 3.1 Flash-Lite scores MMMLU: 88.9%, GPQA: 86.9%, VideoMMMU: 84.8%, MMMU-Pro: 76.8%, CharXiv-R: 73.2%. Gemini 3.8 Flash scores Terminal-Bench 2.1: 89.4%, LVBench: 87.1%, CharXiv-R: 86.2%, LABBench2: 86.2%, DeepSWE 1.1: 73.7%.

Is Gemini 3.1 Flash-Lite cheaper than Gemini 3.8 Flash?

Gemini 3.1 Flash-Lite is 3.0x cheaper for input tokens. Gemini 3.1 Flash-Lite costs $0.25/M input and $1.50/M output via deepinfra. Gemini 3.8 Flash costs $0.75/M input and $3.75/M output via google.

What are the context window sizes for Gemini 3.1 Flash-Lite and Gemini 3.8 Flash?

Gemini 3.1 Flash-Lite supports 1.0M tokens and Gemini 3.8 Flash supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.1 Flash-Lite and Gemini 3.8 Flash?

Key differences include LLM Stats Score (30.5 vs 49.0), context window (1.0M vs 1.0M), input pricing ($0.25 vs $0.75/M). See the full comparison above for benchmark-by-benchmark results.

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