Model Comparison

GPT-5.4 vs o4-miniWhich is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks. o4-mini is 2.9x cheaper per token.

Verdict: GPT-5.4 vs o4-mini — which is better?

GPT-5.4 (by OpenAI) and o4-mini (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 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam), while o4-mini is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

On price, o4-mini is roughly 2.9x 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 3 of 3 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 o4-mini if…

  • cost matters — it's about 2.9x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GPT-5.4 outperforms in 3 benchmarks (BrowseComp, GPQA, Humanity's Last Exam), while o4-mini is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sat Jun 06 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o4-mini costs less

For input processing, GPT-5.4 ($2.50/1M tokens) is 2.3x more expensive than o4-mini ($1.10/1M tokens).

For output processing, GPT-5.4 ($15.00/1M tokens) is 3.4x more expensive than o4-mini ($4.40/1M tokens).

In conclusion, GPT-5.4 is more expensive than o4-mini.*

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
OpenAI
GPT-5.4
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
OpenAI
o4-mini
Input tokens$1.10
Output tokens$4.40
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 o4-mini's 200,000 tokens. GPT-5.4 can generate longer responses up to 128,000 tokens, while o4-mini is limited to 100,000 tokens.

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
OpenAI
o4-mini
Input200,000 tokens
Output100,000 tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and o4-mini support multimodal inputs.

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

GPT-5.4

Text
Images
Audio
Video

o4-mini

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

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while o4-mini was released on 2025-04-16.

GPT-5.4 is 11 months newer than o4-mini.

GPT-5.4

Mar 5, 2026

3 months ago

10mo newer
o4-mini

Apr 16, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

o4-mini has a documented knowledge cutoff of 2024-05-31, while GPT-5.4's cutoff date is not specified.

We can confirm o4-mini's training data extends to 2024-05-31, but cannot make a direct comparison without GPT-5.4's cutoff date.

GPT-5.4

—

o4-mini

May 2024

Provider Availability

GPT-5.4 is available from OpenAI. o4-mini is available from OpenAI.

GPT-5.4

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

o4-mini

openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* 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 BrowseComp score (82.7% vs 51.5%)
Higher GPQA score (92.8% vs 81.4%)
Higher Humanity's Last Exam score (39.8% vs 14.7%)
OpenAI
Less expensive input tokens
Less expensive output tokens
OpenAIGPT-5.4
OpenAIo4-mini
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
OpenAI
o4-mini

FAQ

Common questions about GPT-5.4 vs o4-mini.

Which is better, GPT-5.4 or o4-mini?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and o4-mini 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 o4-mini 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%. o4-mini scores AIME 2024: 93.4%, AIME 2025: 92.7%, MathVista: 84.3%, MMMU: 81.6%, GPQA: 81.4%.

Is GPT-5.4 cheaper than o4-mini?

o4-mini is 2.3x cheaper for input tokens. GPT-5.4 costs $2.50/M input and $15.00/M output via openai. o4-mini costs $1.10/M input and $4.40/M output via openai.

What are the context window sizes for GPT-5.4 and o4-mini?

GPT-5.4 supports 1.0M tokens and o4-mini supports 200K 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 o4-mini?

Key differences include context window (1.0M vs 200K), input pricing ($2.50 vs $1.10/M). See the full comparison above for benchmark-by-benchmark results.

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