Data points: 81
The readout for GPT-4.1 and GPT-5, before the detailed comparison sheet.
Decision read
GPT-5
GPT-5 currently has the stronger profile, with verified wins split 2 to 4.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GPT-5
The charts below split 17 high-signal samples across speed, scores, and audit health.
Model compare GPT-4.1 vs GPT-5gpt-4-1-vs-gpt-5 | Model A GPT-4.1 | Model B GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 4 wins |
| Where it leads | First-token latency, Recent tests | Cheapest input price, Average speed, Free providers, Provider coverage |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-4.1 | GPT-5 |
|---|---|---|
| AIME | 43.7%#26 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-4.1 | GPT-5 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-4.1 | GPT-5 |
|---|---|---|
120 tests | GPT-4.1 gpt-4.1 speed / latency 81 tok/s / 1822ms input / output $0.0010/M / $0.0020/M |
This report only uses LMSpeed data for GPT-4.1 and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-4.1 | GPT-5 |
|---|---|---|
| When to choose each model | GPT-4.1 GPT-4.1 is stronger when you prioritize First-token latency, Recent tests. | GPT-5 GPT-5 is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage. |
TL;DR: GPT-5 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-4.1 vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GPT-4.1 exposes 1.0M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.0M tokens | 128K tokens |
| Max output | No data | 16.4K tokens |
| Released | Apr 2025 | Aug 2025 |
| Modalities | Input ImageTextFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | 2024-09-30 |
| OpenRouter ID | openai/gpt-4.1 | openai/gpt-5-chat |
| References | No data | No data |
| MATH-500 | 91.3%#30 | 99.4%#1 |
|---|
| MMLU-Pro | 80.6%#37 | 87.1%#7 |
|---|
| LiveCodeBench | 45.7%#60 | 84.6%#11 |
|---|
| Time to first answer token | 0.64 s#17 | 62.85 s#98 |
|---|
| Time to first token | 0.64 s#21 | 62.85 s#104 |
|---|
| HLE | 4.6%#90 | 26.5%#24 |
|---|
| Input price | $2.00/M#36 | $1.25/M#30 |
|---|
GPT-5
gpt-5-chat
speed / latency
N/A / N/A
input / output
$0.037/M / $0.300/M
V-API20 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 95 tok/s / 1234ms input / output No data |
|---|
EasyMore5 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
|---|
ModelPool5 tests | GPT-4.1 speed / latency 79 tok/s / 2301ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
N1N5 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 102 tok/s / 948ms input / output No data |
|---|
GPT-4.1 gpt-4.1 speed / latency No data input / output $0.0010/M / $0.0020/M | GPT-5 gpt-5-chat speed / latency No data input / output $0.037/M / $0.300/M |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0.020/M / $0.020/M | GPT-5 gpt-5 speed / latency No data input / output $73.97/M / $591.78/M |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0.027/M / $0.110/M | GPT-5 gpt-5-2025-08-07 speed / latency No data input / output $0.034/M / $0.274/M |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0.082/M / $0.329/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.051/M / $0.411/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
