Model Comparison

GPT-5.4 vs ChatGPT-4o LatestWhich is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks. ChatGPT-4o Latest is 1.3x cheaper per token.

Verdict: GPT-5.4 vs ChatGPT-4o Latest — which is better?

GPT-5.4 (by OpenAI) and ChatGPT-4o Latest (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.

GPT-5.4 outperforms in 1 benchmarks (GPQA), while ChatGPT-4o Latest is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

On price, ChatGPT-4o Latest is roughly 1.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.4 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-5.4 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Mar 2026

Choose ChatGPT-4o Latest if…

  • cost matters — it's about 1.3x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5.4 outperforms in 1 benchmarks (GPQA), while ChatGPT-4o Latest is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

ChatGPT-4o Latest costs less

For input processing, GPT-5.4 ($2.50/1M tokens) costs the same as ChatGPT-4o Latest ($2.50/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 1.5x more expensive than ChatGPT-4o Latest ($10.00/1M tokens).

In conclusion, GPT-5.4 is more expensive than ChatGPT-4o Latest.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
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 ChatGPT-4o Latest's 128,000 tokens. GPT-5.4 can generate longer responses up to 128,000 tokens, while ChatGPT-4o Latest is limited to 16,384 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and ChatGPT-4o Latest support multimodal inputs.

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

GPT-5.4

Text
Images
Audio
Video

ChatGPT-4o Latest

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

ChatGPT-4o Latest

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while ChatGPT-4o Latest was released on 2024-05-13.

GPT-5.4 is 22 months newer than ChatGPT-4o Latest.

GPT-5.4

Mar 5, 2026

3 months ago

1.8yr newer
ChatGPT-4o Latest

May 13, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-5.4 is available from OpenAI. ChatGPT-4o Latest is available from OpenAI.

GPT-5.4

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

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (1,000,000 tokens)
Higher GPQA score (92.8% vs 84.0%)
OpenAI
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
OpenAI
ChatGPT-4o Latest

FAQ

Common questions about GPT-5.4 vs ChatGPT-4o Latest.

Which is better, GPT-5.4 or ChatGPT-4o Latest?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and ChatGPT-4o Latest is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to ChatGPT-4o Latest in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%. ChatGPT-4o Latest scores GPQA: 84.0%.

Is GPT-5.4 cheaper than ChatGPT-4o Latest?

Both models cost $2.50 per million input tokens.

What are the context window sizes for GPT-5.4 and ChatGPT-4o Latest?

GPT-5.4 supports 1.0M tokens and ChatGPT-4o Latest supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.4 and ChatGPT-4o Latest?

Key differences include context window (1.0M vs 128K). See the full comparison above for benchmark-by-benchmark results.

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