Model Comparison

GPT-4o vs GPT-4.1

GPT-4.1 significantly outperforms across most benchmarks. GPT-4.1 is 1.3x cheaper per token.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

23 benchmarks

GPT-4o outperforms in 4 benchmarks (CharXiv-R, ComplexFuncBench, GPQA, Multi-Challenge), while GPT-4.1 is better at 19 benchmarks (Aider-Polyglot, Aider-Polyglot Edit, AIME 2024, CharXiv-D, COLLIE, Graphwalks BFS <128k, Graphwalks parents <128k, Humanity's Last Exam, IFEval, Internal API instruction following (hard), MathVista, MMLU, MMMLU, MMMU, Multi-IF, OpenAI-MRCR: 2 needle 128k, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail).

GPT-4.1 significantly outperforms across most benchmarks.

Sat Apr 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4.1 costs less

For input processing, GPT-4o ($2.50/1M tokens) is 1.3x more expensive than GPT-4.1 ($2.00/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 1.3x more expensive than GPT-4.1 ($8.00/1M tokens).

In conclusion, GPT-4o is more expensive than GPT-4.1.*

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

Lowest available price from all providers
Sat Apr 18 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
OpenAI
GPT-4.1
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-4.1 accepts 1,047,576 input tokens compared to GPT-4o's 128,000 tokens. GPT-4.1 can generate longer responses up to 32,768 tokens, while GPT-4o is limited to 16,384 tokens.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
OpenAI
GPT-4.1
Input1,047,576 tokens
Output32,768 tokens
Sat Apr 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4o and GPT-4.1 support multimodal inputs.

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

GPT-4o

Text
Images
Audio
Video

GPT-4.1

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-4o

Proprietary

Closed source

GPT-4.1

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while GPT-4.1 was released on 2025-04-14.

GPT-4.1 is 8 months newer than GPT-4o.

GPT-4o

Aug 6, 2024

1.7 years ago

GPT-4.1

Apr 14, 2025

1.0 years ago

8mo newer

Knowledge Cutoff

When training data ends

GPT-4.1 has a documented knowledge cutoff of 2024-06-01, while GPT-4o's cutoff date is not specified.

We can confirm GPT-4.1's training data extends to 2024-06-01, but cannot make a direct comparison without GPT-4o's cutoff date.

GPT-4o

—

GPT-4.1

Jun 2024

Provider Availability

GPT-4o is available from Azure, OpenAI. GPT-4.1 is available from OpenAI.

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

GPT-4.1

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Higher CharXiv-R score (58.8% vs 56.7%)
Higher ComplexFuncBench score (66.5% vs 65.5%)
Higher GPQA score (70.1% vs 66.3%)
Higher Multi-Challenge score (40.3% vs 38.3%)
OpenAI
Larger context window (1,047,576 tokens)
Less expensive input tokens
Less expensive output tokens
Higher Aider-Polyglot score (51.6% vs 30.7%)
Higher Aider-Polyglot Edit score (52.9% vs 18.2%)
Higher AIME 2024 score (48.1% vs 13.1%)
Higher CharXiv-D score (87.9% vs 85.3%)
Higher COLLIE score (65.8% vs 61.0%)
Higher Graphwalks BFS <128k score (61.7% vs 41.7%)
Higher Graphwalks parents <128k score (58.0% vs 35.4%)
Higher Humanity's Last Exam score (5.4% vs 5.3%)
Higher IFEval score (87.4% vs 81.0%)
Higher Internal API instruction following (hard) score (49.1% vs 29.2%)
Higher MathVista score (72.2% vs 61.4%)
Higher MMLU score (90.2% vs 85.7%)
Higher MMMLU score (87.3% vs 81.4%)
Higher MMMU score (74.8% vs 72.2%)
Higher Multi-IF score (70.8% vs 60.9%)
Higher OpenAI-MRCR: 2 needle 128k score (57.2% vs 31.9%)
Higher SWE-Bench Verified score (54.6% vs 33.2%)
Higher TAU-bench Airline score (49.4% vs 42.8%)
Higher TAU-bench Retail score (68.0% vs 60.3%)
OpenAIGPT-4o
OpenAIGPT-4.1
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o
OpenAI
GPT-4.1

FAQ

Common questions about GPT-4o vs GPT-4.1

GPT-4.1 significantly outperforms across most benchmarks. GPT-4o is made by OpenAI and GPT-4.1 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. GPT-4.1 scores MMLU: 90.2%, CharXiv-D: 87.9%, IFEval: 87.4%, MMMLU: 87.3%, MMMU: 74.8%.
GPT-4.1 is 1.3x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. GPT-4.1 costs $2.00/M input and $8.00/M output via openai.
GPT-4o supports 128K tokens and GPT-4.1 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (128K vs 1.0M), input pricing ($2.50 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.