Model Comparison

GPT-4 Turbo vs Phi 4Which is better in 2026?

GPT-4 Turbo shows notably better performance in the majority of benchmarks. Phi 4 is 171.4x cheaper per token.

Verdict: GPT-4 Turbo vs Phi 4 — which is better?

GPT-4 Turbo (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 Turbo outperforms in 4 benchmarks (DROP, HumanEval, MGSM, MMLU), while Phi 4 is better at 2 benchmarks (GPQA, MATH). GPT-4 Turbo shows notably better performance in the majority of benchmarks.

On price, Phi 4 is roughly 171.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-4 Turbo also accepts a larger context window (128,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GPT-4 Turbo if…

  • you want the strongest raw capability — it leads on 4 of 6 shared benchmarks
  • you process long inputs — it offers a 128,000 token context window

Choose Phi 4 if…

  • cost matters — it's about 171.4x 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

6 benchmarks

GPT-4 Turbo outperforms in 4 benchmarks (DROP, HumanEval, MGSM, MMLU), while Phi 4 is better at 2 benchmarks (GPQA, MATH).

GPT-4 Turbo shows notably better performance in the majority of benchmarks.

Mon Jun 29 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Phi 4 costs less

For input processing, GPT-4 Turbo ($10.00/1M tokens) is 142.9x more expensive than Phi 4 ($0.07/1M tokens).

For output processing, GPT-4 Turbo ($30.00/1M tokens) is 214.3x more expensive than Phi 4 ($0.14/1M tokens).

In conclusion, GPT-4 Turbo is more expensive than Phi 4.*

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

Lowest available price from all providers
Mon Jun 29 2026 • llm-stats.com
OpenAI
GPT-4 Turbo
Input tokens$10.00
Output tokens$30.00
Best providerAzure
Microsoft
Phi 4
Input tokens$0.07
Output tokens$0.14
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-4 Turbo accepts 128,000 input tokens compared to Phi 4's 16,000 tokens. Phi 4 can generate longer responses up to 16,000 tokens, while GPT-4 Turbo is limited to 4,096 tokens.

OpenAI
GPT-4 Turbo
Input128,000 tokens
Output4,096 tokens
Microsoft
Phi 4
Input16,000 tokens
Output16,000 tokens
Mon Jun 29 2026 • llm-stats.com

License

Usage and distribution terms

GPT-4 Turbo 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.

GPT-4 Turbo

Proprietary

Closed source

Phi 4

MIT

Open weights

Release Timeline

When each model was launched

GPT-4 Turbo was released on 2024-04-09, while Phi 4 was released on 2024-12-12.

Phi 4 is 8 months newer than GPT-4 Turbo.

GPT-4 Turbo

Apr 9, 2024

2.2 years ago

Phi 4

Dec 12, 2024

1.5 years ago

8mo newer

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a knowledge cutoff of 2023-12-31, 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 Turbo (2023-12-31).

GPT-4 Turbo

Dec 2023

Phi 4

Jun 2024

6 mo newer

Provider Availability

GPT-4 Turbo is available from Azure, OpenAI. Phi 4 is available from DeepInfra.

GPT-4 Turbo

azure logo
Azure
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M
openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M

Phi 4

deepinfra logo
Deepinfra
Input Price:Input: $0.07/1MOutput Price:Output: $0.14/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (128,000 tokens)
Higher DROP score (86.0% vs 75.5%)
Higher HumanEval score (87.1% vs 82.6%)
Higher MGSM score (88.5% vs 80.6%)
Higher MMLU score (86.5% vs 84.8%)
Microsoft
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher GPQA score (56.1% vs 48.0%)
Higher MATH score (80.4% vs 72.6%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-4 Turbo and Phi 4 side-by-side, then vote on the output you prefer.

GPT-4 Turbo
✓ Preferred
Phi 4
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-4 Turbo
Microsoft
Phi 4

FAQ

Common questions about GPT-4 Turbo vs Phi 4.

Which is better, GPT-4 Turbo or Phi 4?

GPT-4 Turbo shows notably better performance in the majority of benchmarks. GPT-4 Turbo is made by OpenAI and Phi 4 is made by Microsoft. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4 Turbo compare to Phi 4 in benchmarks?

GPT-4 Turbo scores MGSM: 88.5%, HumanEval: 87.1%, MMLU: 86.5%, DROP: 86.0%, MATH: 72.6%. Phi 4 scores MMLU: 84.8%, HumanEval+: 82.8%, HumanEval: 82.6%, MGSM: 80.6%, MATH: 80.4%.

Is GPT-4 Turbo cheaper than Phi 4?

Phi 4 is 142.9x cheaper for input tokens. GPT-4 Turbo costs $10.00/M input and $30.00/M output via azure. Phi 4 costs $0.07/M input and $0.14/M output via deepinfra.

What are the context window sizes for GPT-4 Turbo and Phi 4?

GPT-4 Turbo supports 128K tokens and Phi 4 supports 16K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-4 Turbo and Phi 4?

Key differences include context window (128K vs 16K), input pricing ($10.00 vs $0.07/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4 Turbo and Phi 4?

GPT-4 Turbo is developed by OpenAI and Phi 4 is developed by Microsoft.

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