Model Comparison

Gemini 3.5 Flash-Lite vs GPT-5.2Which is better in 2026?

GPT-5.2 significantly outperforms across most benchmarks. Gemini 3.5 Flash-Lite is 5.7x cheaper per token.

Verdict: Gemini 3.5 Flash-Lite vs GPT-5.2 — which is better?

Gemini 3.5 Flash-Lite (by Google) and GPT-5.2 (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 3.5 Flash-Lite outperforms in 0 benchmarks, while GPT-5.2 is better at 1 benchmark (CharXiv-R). GPT-5.2 significantly outperforms across most benchmarks.

On price, Gemini 3.5 Flash-Lite is roughly 5.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.5 Flash-Lite also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3.5 Flash-Lite if…

  • cost matters — it's about 5.7x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jul 2026

Choose GPT-5.2 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Gemini 3.5 Flash-Lite outperforms in 0 benchmarks, while GPT-5.2 is better at 1 benchmark (CharXiv-R).

GPT-5.2 significantly outperforms across most benchmarks.

Tue Jul 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3.5 Flash-Lite costs less

For input processing, Gemini 3.5 Flash-Lite ($0.30/1M tokens) is 5.8x cheaper than GPT-5.2 ($1.75/1M tokens).

For output processing, Gemini 3.5 Flash-Lite ($2.50/1M tokens) is 5.6x cheaper than GPT-5.2 ($14.00/1M tokens).

In conclusion, GPT-5.2 is more expensive than Gemini 3.5 Flash-Lite.*

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

Lowest available price from all providers
Tue Jul 21 2026 • llm-stats.com
Google
Gemini 3.5 Flash-Lite
Input tokens$0.30
Output tokens$2.50
Best providerGoogle
OpenAI
GPT-5.2
Input tokens$1.75
Output tokens$14.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.5 Flash-Lite accepts 1,048,576 input tokens compared to GPT-5.2's 400,000 tokens. GPT-5.2 can generate longer responses up to 128,000 tokens, while Gemini 3.5 Flash-Lite is limited to 65,536 tokens.

Google
Gemini 3.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
OpenAI
GPT-5.2
Input400,000 tokens
Output128,000 tokens
Tue Jul 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3.5 Flash-Lite and GPT-5.2 support multimodal inputs.

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

Gemini 3.5 Flash-Lite

Text
Images
Audio
Video

GPT-5.2

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 3.5 Flash-Lite

Proprietary

Closed source

GPT-5.2

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.5 Flash-Lite was released on 2026-07-21, while GPT-5.2 was released on 2025-12-11.

Gemini 3.5 Flash-Lite is 7 months newer than GPT-5.2.

Gemini 3.5 Flash-Lite

Jul 21, 2026

0 days ago

7mo newer
GPT-5.2

Dec 11, 2025

7 months ago

Knowledge Cutoff

When training data ends

Gemini 3.5 Flash-Lite has a knowledge cutoff of 2026-03-31, while GPT-5.2 has a cutoff of 2025-08-25.

Gemini 3.5 Flash-Lite has more recent training data (up to 2026-03-31), making it potentially better informed about events through that date compared to GPT-5.2 (2025-08-25).

Gemini 3.5 Flash-Lite

Mar 2026

7 mo newer
GPT-5.2

Aug 2025

Provider Availability

Gemini 3.5 Flash-Lite is available from Google. GPT-5.2 is available from OpenAI.

Gemini 3.5 Flash-Lite

google logo
Google
Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M

GPT-5.2

openai logo
OpenAI
Input Price:Input: $1.75/1MOutput Price:Output: $14.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher CharXiv-R score (82.1% vs 76.5%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 3.5 Flash-Lite and GPT-5.2 side-by-side, then vote on the output you prefer.

Gemini 3.5 Flash-Lite
✓ Preferred
GPT-5.2
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 3.5 Flash-Lite
OpenAI
GPT-5.2

FAQ

Common questions about Gemini 3.5 Flash-Lite vs GPT-5.2.

Which is better, Gemini 3.5 Flash-Lite or GPT-5.2?

GPT-5.2 significantly outperforms across most benchmarks. Gemini 3.5 Flash-Lite is made by Google and GPT-5.2 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3.5 Flash-Lite compare to GPT-5.2 in benchmarks?

Gemini 3.5 Flash-Lite scores CharXiv-R: 76.5%, OSWorld-Verified: 74.0%, SWE-Bench Pro: 54.2%, Terminal-Bench 2.1: 54.0%, MLE-Bench: 39.2%. GPT-5.2 scores AIME 2025: 100.0%, HMMT 2025: 99.4%, Tau2 Telecom: 98.7%, Graphwalks BFS <128k: 94.0%, GPQA: 92.4%.

Is Gemini 3.5 Flash-Lite cheaper than GPT-5.2?

Gemini 3.5 Flash-Lite is 5.8x cheaper for input tokens. Gemini 3.5 Flash-Lite costs $0.30/M input and $2.50/M output via google. GPT-5.2 costs $1.75/M input and $14.00/M output via openai.

What are the context window sizes for Gemini 3.5 Flash-Lite and GPT-5.2?

Gemini 3.5 Flash-Lite supports 1.0M tokens and GPT-5.2 supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.5 Flash-Lite and GPT-5.2?

Key differences include context window (1.0M vs 400K), input pricing ($0.30 vs $1.75/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.5 Flash-Lite and GPT-5.2?

Gemini 3.5 Flash-Lite is developed by Google and GPT-5.2 is developed by OpenAI.

Related comparisons