gpt-4.1 vs kimi-k2
Side-by-side comparison of gpt-4.1 and kimi-k2: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. kimi-k2 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
kimi-k2
Input / 1M
$0.60
Output / 1M
$2.50
Context
262K
Model ID
vertex/kimi-k2
Benchmark comparison
Intelligence Indexreasoning
gpt-4.119.4%
kimi-k232.7%
Math Indexmath
gpt-4.134.7%
kimi-k294.7%
GPQA Diamondreasoning
gpt-4.166.6%
kimi-k283.8%
AIME 2025math
gpt-4.134.7%
kimi-k294.7%
LiveCodeBenchcoding
gpt-4.145.7%
kimi-k285.3%
Terminal-Bench Hardagentic
gpt-4.113.6%
kimi-k231.1%
τ²-Benchagentic
gpt-4.147.1%
kimi-k293.0%
SciCodecoding
gpt-4.138.1%
kimi-k242.4%
MMLU Proknowledge
gpt-4.180.6%
kimi-k284.8%
Humanity's Last Examreasoning
gpt-4.14.6%
kimi-k222.3%
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 | kimi-k2 | |
|---|---|---|
| Input price / 1M | $2.00 | $0.60 |
| Output price / 1M | $8.00 | $2.50 |
| Context window | 1.0M tokens | 262K tokens |
| Max output | 33K tokens | 262K 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. | Google LLC (Vertex AI) |
Questions people ask
Is gpt-4.1 better than kimi-k2?
kimi-k2 outperforms gpt-4.1 on 10 of 10 shared benchmarks. See the benchmark comparison above for specifics: gpt-4.1 and kimi-k2 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, gpt-4.1 or kimi-k2?
kimi-k2 is cheaper. gpt-4.1 costs $2.00/$8.00 per 1M input/output tokens, while kimi-k2 costs $0.60/$2.50.
Can I use gpt-4.1 and kimi-k2 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 "vertex/kimi-k2", no other code changes needed.
What are the context windows?
gpt-4.1 supports up to 1.0M tokens of context. kimi-k2 supports up to 262K 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 kimi-k2 with one line of code
Requesty provides a single OpenAI-compatible API for 600+ models. Change the model parameter, not your code.