| Signal | GPT-5.1 Chat | Delta | GPT-5.4 |
|---|---|---|---|
Capabilities | 83 | -17 | |
Pricing | 10 | -5 | |
Context window size | 81 | -14 | |
Recency | 100 | -- | |
Output Capacity | 70 | -15 | |
Benchmarks | 0 | -90 | |
| Overall Result | 0 wins | of 6 | 5 wins |
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OpenAI
OpenAI
GPT-5.1 Chat saves you $375.00/month
That's $4500.00/year compared to GPT-5.4 at your current usage level of 100K calls/month.
| Metric | GPT-5.1 Chat | GPT-5.4 | Winner |
|---|---|---|---|
| Overall Score | 85 | 94 | GPT-5.4 |
| Rank | #36 | #2 | GPT-5.4 |
| Quality Rank | #36 | #2 | GPT-5.4 |
| Adoption Rank | #36 | #2 | GPT-5.4 |
| Parameters | -- | -- | -- |
| Context Window | 128K | 1050K | GPT-5.4 |
| Pricing | $1.25/$10.00/M | $2.50/$15.00/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 100 | GPT-5.4 |
| Pricing | 10 | 15 | GPT-5.4 |
| Context window size | 81 | 96 | GPT-5.4 |
| Recency | 100 | 100 | GPT-5.1 Chat |
| Output Capacity | 70 | 85 | GPT-5.4 |
| Benchmarks | -- | 90 | GPT-5.4 |
Our composite score (0–100) combines six weighted signals: benchmark performance (25%), pricing efficiency (25%), context window size (15%), model recency (15%), output capacity (10%), and capability versatility (10%). Here's what the scores mean for these two models:
Scores 85/100 (rank #36), placing it in the top 88% of all 290 models tracked.
Scores 94/100 (rank #2), placing it in the top 100% of all 290 models tracked.
GPT-5.4 has a 9-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
GPT-5.1 Chat offers 36% better value per quality point. At 1M tokens/day, you'd spend $168.75/month with GPT-5.1 Chat vs $262.50/month with GPT-5.4 - a $93.75 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-5.1 Chat also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($10.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (94/100) 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-5.4 has a moderate advantage with a 9-point lead in composite score. It wins on more signal dimensions, but GPT-5.1 Chat has specific strengths that could make it the better choice for certain workflows.
Best for Quality
GPT-5.1 Chat
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-5.1 Chat
36% lower pricing; better value at scale
Best for Reliability
GPT-5.1 Chat
Higher uptime and faster response speeds
Best for Prototyping
GPT-5.1 Chat
Stronger community support and better developer experience
Best for Production
GPT-5.1 Chat
Wider enterprise adoption and proven at scale
by OpenAI
| Capability | GPT-5.1 Chat | GPT-5.4 |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Search | ||
| Image Output |
OpenAI
OpenAI
GPT-5.1 Chat saves you $8.25/month
That's 37% cheaper than GPT-5.4 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-5.1 Chat | GPT-5.4 |
|---|---|---|
| Context Window | 128K | 1.1M |
| Max Output Tokens | 16,384 | 128,000 |
| Open Source | No | No |
| Created | Nov 13, 2025 | Mar 5, 2026 |
GPT-5.4 scores 94/100 (rank #2) compared to GPT-5.1 Chat's 85/100 (rank #36), giving it a 9-point advantage. GPT-5.4 is the stronger overall choice, though GPT-5.1 Chat may excel in specific areas like cost efficiency.
GPT-5.1 Chat is ranked #36 and GPT-5.4 is ranked #2 out of 290+ AI models. Rankings use a composite score combining benchmark performance (25%), pricing (25%), context window (15%), recency (15%), output capacity (10%), and versatility (10%). Scores update hourly.
GPT-5.1 Chat is cheaper at $10.00/M output tokens vs GPT-5.4's $15.00/M output tokens - 1.5x more expensive. Input token pricing: GPT-5.1 Chat at $1.25/M vs GPT-5.4 at $2.50/M.
GPT-5.4 has a larger context window of 1,050,000 tokens compared to GPT-5.1 Chat's 128,000 tokens. A larger context window means the model can process longer documents and conversations.