gpt-4.1 vs gpt-5
Side-by-side comparison of gpt-4.1 and gpt-5: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. gpt-5 outperforms gpt-4.1 on 10 of 10 shared benchmarks.
gpt-4.1
Input / 1M
$2.00
Output / 1M
$8.00
Context
1.0M
Model ID
openai/gpt-4.1
gpt-5
Input / 1M
$1.25
Output / 1M
$10.00
Context
400K
Model ID
openai/gpt-5
Benchmark comparison
Intelligence Indexreasoning
gpt-4.119.4%
gpt-534.7%
Coding Indexcoding
gpt-4.1N/A
gpt-537.8%
Math Indexmath
gpt-4.134.7%
gpt-594.3%
GPQA Diamondreasoning
gpt-4.166.6%
gpt-585.4%
AIME 2025math
gpt-4.134.7%
gpt-594.3%
LiveCodeBenchcoding
gpt-4.145.7%
gpt-584.6%
Terminal-Bench Hardagentic
gpt-4.113.6%
gpt-532.6%
τ²-Benchagentic
gpt-4.147.1%
gpt-584.8%
SciCodecoding
gpt-4.138.1%
gpt-542.9%
MMLU Proknowledge
gpt-4.180.6%
gpt-587.1%
Humanity's Last Examreasoning
gpt-4.14.6%
gpt-526.5%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| gpt-4.1 | gpt-5 | |
|---|---|---|
| Input price / 1M | $2.00 | $1.25 |
| Output price / 1M | $8.00 | $10.00 |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 33K tokens | 128K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | N/A | Yes |
| Prompt caching | Yes | Yes |
| Computer use | N/A | N/A |
| Provider | OpenAI Inc. | OpenAI Inc. |
Questions people ask
Is gpt-4.1 better than gpt-5?
gpt-5 outperforms gpt-4.1 on 10 of 10 shared benchmarks. See the benchmark comparison above for specifics: gpt-4.1 and gpt-5 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, gpt-4.1 or gpt-5?
gpt-4.1 is cheaper. gpt-4.1 costs $2.00/$8.00 per 1M input/output tokens, while gpt-5 costs $1.25/$10.00.
Can I use gpt-4.1 and gpt-5 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "openai/gpt-4.1" and "openai/gpt-5", no other code changes needed.
What are the context windows?
gpt-4.1 supports up to 1.0M tokens of context. gpt-5 supports up to 400K tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between gpt-4.1 and gpt-5 with one line of code
Requesty provides a single OpenAI-compatible API for 600+ models. Change the model parameter, not your code.