Model Comparison
GPT-4 vs Phi 4Which is better in 2026?
Phi 4 shows notably better performance in the majority of benchmarks. Phi 4 is 428.6x cheaper per token.
Verdict: GPT-4 vs Phi 4 — which is better?
GPT-4 (by OpenAI) and Phi 4 (by Microsoft) 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-4 outperforms in 2 benchmarks (DROP, MMLU), while Phi 4 is better at 4 benchmarks (GPQA, HumanEval, MATH, MGSM). Phi 4 shows notably better performance in the majority of benchmarks.
On price, Phi 4 is roughly 428.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-4 also accepts a larger context window (32,768 input tokens), making it the stronger choice for long documents and large codebases.
Choose GPT-4 if…
- you process long inputs — it offers a 32,768 token context window
Choose Phi 4 if…
- you want the strongest raw capability — it leads on 4 of 6 shared benchmarks
- cost matters — it's about 428.6x cheaper per token
- you want the most recent training data — it shipped Dec 2024
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
GPT-4 outperforms in 2 benchmarks (DROP, MMLU), while Phi 4 is better at 4 benchmarks (GPQA, HumanEval, MATH, MGSM).
Phi 4 shows notably better performance in the majority of benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-4 ($30.00/1M tokens) is 428.6x more expensive than Phi 4 ($0.07/1M tokens).
For output processing, GPT-4 ($60.00/1M tokens) is 428.6x more expensive than Phi 4 ($0.14/1M tokens).
In conclusion, GPT-4 is more expensive than Phi 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-4 accepts 32,768 input tokens compared to Phi 4's 16,000 tokens. GPT-4 can generate longer responses up to 32,768 tokens, while Phi 4 is limited to 16,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-4 supports multimodal inputs, whereas Phi 4 does not.
GPT-4 can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-4
Phi 4
License
Usage and distribution terms
GPT-4 is licensed under a proprietary license, while Phi 4 uses MIT.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
MIT
Open weights
Release Timeline
When each model was launched
GPT-4 was released on 2023-06-13, while Phi 4 was released on 2024-12-12.
Phi 4 is 18 months newer than GPT-4.
Jun 13, 2023
3.1 years ago
Dec 12, 2024
1.6 years ago
1.5yr newerKnowledge Cutoff
When training data ends
GPT-4 has a knowledge cutoff of 2022-12-31, while Phi 4 has a cutoff of 2024-06-01.
Phi 4 has more recent training data (up to 2024-06-01), making it potentially better informed about events through that date compared to GPT-4 (2022-12-31).
Dec 2022
Jun 2024
1.5 yr newerProvider Availability
GPT-4 is available from Azure, OpenAI. Phi 4 is available from DeepInfra.
GPT-4
Phi 4
Outputs Comparison
Key Takeaways
GPT-4
View detailsOpenAI
Phi 4
View detailsMicrosoft
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against GPT-4 and Phi 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4 vs Phi 4.