GPT-5.4 vs Gemini 3.1 Flash-Lite Comparison

Comparing GPT-5.4 and Gemini 3.1 Flash-Lite across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GPT-5.4 outperforms in 3 benchmarks (GPQA, Humanity's Last Exam, MMMU-Pro), while Gemini 3.1 Flash-Lite is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3.1 Flash-Lite costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 10.0x more expensive than Gemini 3.1 Flash-Lite ($0.25/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 10.0x more expensive than Gemini 3.1 Flash-Lite ($1.50/1M tokens).

In conclusion, GPT-5.4 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

Tue Mar 17 2026 • llm-stats.com

GPT-5.4

Input tokens$2.50

Output tokens$15.00

Best providerOpenAI

Gemini 3.1 Flash-Lite

Input tokens$0.25

Output tokens$1.50

Best providerGoogle

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,000,000 tokens. GPT-5.4 can generate longer responses up to 128,000 tokens, while Gemini 3.1 Flash-Lite is limited to 65,536 tokens.

GPT-5.4

Input1,000,000 tokens

Output128,000 tokens

Gemini 3.1 Flash-Lite

Input1,000,000 tokens

Output65,536 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Gemini 3.1 Flash-Lite support multimodal inputs.

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

GPT-5.4

Text

Images

Audio

Video

Gemini 3.1 Flash-Lite

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.

GPT-5.4

Proprietary

Closed source

Gemini 3.1 Flash-Lite

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Gemini 3.1 Flash-Lite was released on 2026-03-03.

GPT-5.4 is 0 month newer than Gemini 3.1 Flash-Lite.

GPT-5.4

Mar 5, 2026

1 weeks ago

2d newer

Gemini 3.1 Flash-Lite

Mar 3, 2026

2 weeks ago

Knowledge Cutoff

When training data ends

Gemini 3.1 Flash-Lite has a documented knowledge cutoff of 2025-01-31, while GPT-5.4's cutoff date is not specified.

We can confirm Gemini 3.1 Flash-Lite's training data extends to 2025-01-31, but cannot make a direct comparison without GPT-5.4's cutoff date.

GPT-5.4

—

Gemini 3.1 Flash-Lite

Jan 2025

Provider Availability

GPT-5.4 is available from OpenAI. Gemini 3.1 Flash-Lite is available from Google. The availability of providers can affect quality of the model and reliability.