GPT-5.4 vs Gemini 3 Flash Comparison

Comparing GPT-5.4 and Gemini 3 Flash across benchmarks, pricing, and capabilities.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

GPT-5.4 outperforms in 6 benchmarks (ARC-AGI v2, GPQA, MCP Atlas, OmniDocBench 1.5, Terminal-Bench 2.0, Toolathlon), while Gemini 3 Flash is better at 1 benchmark (Humanity's Last Exam).

GPT-5.4 shows notably better performance in the majority of benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 5.0x more expensive than Gemini 3 Flash ($0.50/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 5.0x more expensive than Gemini 3 Flash ($3.00/1M tokens).

In conclusion, GPT-5.4 is more expensive than Gemini 3 Flash.*

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

Lowest available price from all providers
Tue Mar 17 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

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 Flash is limited to 65,536 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
Google
Gemini 3 Flash
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 Flash 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 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.

GPT-5.4

Proprietary

Closed source

Gemini 3 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Gemini 3 Flash was released on 2025-12-17.

GPT-5.4 is 3 months newer than Gemini 3 Flash.

GPT-5.4

Mar 5, 2026

1 weeks ago

2mo newer
Gemini 3 Flash

Dec 17, 2025

3 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while GPT-5.4's cutoff date is not specified.

We can confirm Gemini 3 Flash'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 Flash

Jan 2025

Provider Availability

GPT-5.4 is available from OpenAI. Gemini 3 Flash is available from Google. The availability of providers can affect quality of the model and reliability.

GPT-5.4

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Higher ARC-AGI v2 score (73.3% vs 33.6%)
Higher GPQA score (92.8% vs 90.4%)
Higher MCP Atlas score (67.2% vs 57.4%)
Higher OmniDocBench 1.5 score (89.1% vs 12.1%)
Higher Terminal-Bench 2.0 score (75.1% vs 47.6%)
Higher Toolathlon score (54.6% vs 49.4%)
Google
Less expensive input tokens
Less expensive output tokens
Higher Humanity's Last Exam score (43.5% vs 39.8%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Google
Gemini 3 Flash