GPT-5.4 vs GPT-5.3 Chat Comparison

Comparing GPT-5.4 and GPT-5.3 Chat across benchmarks, pricing, and capabilities.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5.4 and GPT-5.3 Chat don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-5.3 Chat costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 1.4x more expensive than GPT-5.3 Chat ($1.75/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 1.1x more expensive than GPT-5.3 Chat ($14.00/1M tokens).

In conclusion, GPT-5.4 is more expensive than GPT-5.3 Chat.*

* 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

GPT-5.3 Chat

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

GPT-5.4 accepts 1,000,000 input tokens compared to GPT-5.3 Chat's 128,000 tokens. GPT-5.4 can generate longer responses up to 128,000 tokens, while GPT-5.3 Chat is limited to 16,384 tokens.

GPT-5.4

Input1,000,000 tokens

Output128,000 tokens

GPT-5.3 Chat

Input128,000 tokens

Output16,384 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and GPT-5.3 Chat support multimodal inputs.

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

GPT-5.4

Text

Images

Audio

Video

GPT-5.3 Chat

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

GPT-5.3 Chat

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while GPT-5.3 Chat was released on 2026-03-04.

GPT-5.4 is 0 month newer than GPT-5.3 Chat.

GPT-5.4

Mar 5, 2026

1 weeks ago

1d newer

GPT-5.3 Chat

Mar 4, 2026

1 weeks ago

Knowledge Cutoff

When training data ends

GPT-5.3 Chat has a documented knowledge cutoff of 2025-08-31, while GPT-5.4's cutoff date is not specified.

We can confirm GPT-5.3 Chat's training data extends to 2025-08-31, but cannot make a direct comparison without GPT-5.4's cutoff date.

GPT-5.4

—

GPT-5.3 Chat

Aug 2025

Provider Availability

GPT-5.4 is available from OpenAI. GPT-5.3 Chat is available from OpenAI. The availability of providers can affect quality of the model and reliability.