| Signal | GPT-4.1 | Delta | GPT-5.1 |
|---|---|---|---|
Capabilities | 83 | -17 | |
Benchmarks | 75 | +1 | |
Pricing | 8 | -2 | |
Context window size | 96 | +7 | |
Recency | 69 | -31 | |
Output Capacity | 75 | -10 | |
| Overall Result | 2 wins | of 6 | 4 wins |
9
days higher
5
days
16
days higher
OpenAI
OpenAI
GPT-4.1 saves you $25.00/month
That's $300.00/year compared to GPT-5.1 at your current usage level of 100K calls/month.
| Metric | GPT-4.1 | GPT-5.1 | Winner |
|---|---|---|---|
| Overall Score | 76 | 76 | GPT-4.1 |
| Rank | #42 | #43 | GPT-4.1 |
| Quality Rank | #42 | #43 | GPT-4.1 |
| Adoption Rank | #42 | #43 | GPT-4.1 |
| Parameters | -- | -- | -- |
| Context Window | 1048K | 400K | GPT-4.1 |
| Pricing | $2.00/$8.00/M | $1.25/$10.00/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 100 | GPT-5.1 |
| Benchmarks | 75 | 74 | GPT-4.1 |
| Pricing | 8 | 10 | GPT-5.1 |
| Context window size | 96 | 89 | GPT-4.1 |
| Recency | 69 | 100 | GPT-5.1 |
| Output Capacity | 75 | 85 | GPT-5.1 |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Here's what the scores mean for these two models:
Scores 76/100 (rank #42), placing it in the top 86% of all 290 models tracked.
Scores 76/100 (rank #43), placing it in the top 86% of all 290 models tracked.
With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
GPT-4.1 offers 11% better value per quality point. At 1M tokens/day, you'd spend $150.00/month with GPT-4.1 vs $168.75/month with GPT-5.1 - a $18.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. GPT-4.1 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1048K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($8.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (76/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
GPT-4.1 and GPT-5.1 are extremely close in overall performance (only 0.4000000000000057 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
Best for Quality
GPT-4.1
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-4.1
11% lower pricing; better value at scale
Best for Reliability
GPT-4.1
Higher uptime and faster response speeds
Best for Prototyping
GPT-4.1
Stronger community support and better developer experience
Best for Production
GPT-4.1
Wider enterprise adoption and proven at scale
by OpenAI
| Capability | GPT-4.1 | GPT-5.1 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Search | ||
| Image Output |
OpenAI
OpenAI
GPT-4.1 saves you $1.05/month
That's 7% cheaper than GPT-5.1 at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | GPT-4.1 | GPT-5.1 |
|---|---|---|
| Context Window | 1.0M | 400K |
| Max Output Tokens | 32,768 | 128,000 |
| Open Source | No | No |
| Created | Apr 14, 2025 | Nov 13, 2025 |
GPT-4.1 scores 76/100 (rank #42) compared to GPT-5.1's 76/100 (rank #43), giving it a 0-point advantage. GPT-4.1 is the stronger overall choice, though GPT-5.1 may excel in specific areas like certain benchmarks.
GPT-4.1 is ranked #42 and GPT-5.1 is ranked #43 out of 290+ AI models. Rankings use a composite score combining benchmark performance (90%) from MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations, with capabilities and context window as tiebreakers (10%). Scores update hourly.
GPT-4.1 is cheaper at $8.00/M output tokens vs GPT-5.1's $10.00/M output tokens - 1.3x more expensive. Input token pricing: GPT-4.1 at $2.00/M vs GPT-5.1 at $1.25/M.
GPT-4.1 has a larger context window of 1,047,576 tokens compared to GPT-5.1's 400,000 tokens. A larger context window means the model can process longer documents and conversations.