kimi-k2 vs gpt-4.1
Side-by-side comparison of kimi-k2 and gpt-4.1 — benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. gpt-4.1 outperforms kimi-k2 on 4 of 6 shared benchmarks.
kimi-k2
Input / 1M
$0.60
Output / 1M
$2.50
Context
262K
Model ID
vertex/kimi-k2
gpt-4.1
Input / 1M
$2.00
Output / 1M
$8.00
Context
1.0M
Model ID
openai/gpt-4.1
Benchmark comparison
MMLU Proknowledge
kimi-k282.3%
gpt-4.185.3%
GPQA Diamondreasoning
kimi-k270.0%
gpt-4.174.1%
HumanEvalcoding
kimi-k289.9%
gpt-4.191.8%
SWE-Bench Verifiedcoding
kimi-k265.8%
gpt-4.168.1%
MATHmath
kimi-k289.2%
gpt-4.189.2%
AIME 2024math
kimi-k280.1%
gpt-4.172.4%
MMMUmultimodal
kimi-k2—
gpt-4.174.8%
LiveBenchreasoning
kimi-k268.3%
gpt-4.166.7%
τ-bench Retailagentic
kimi-k2—
gpt-4.165.1%
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
| kimi-k2 | gpt-4.1 | |
|---|---|---|
| Input price / 1M | $0.60 | $2.00 |
| Output price / 1M | $2.50 | $8.00 |
| Context window | 262K tokens | 1.0M tokens |
| Max output | 262K tokens | 33K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | — |
| Prompt caching | Yes | Yes |
| Computer use | — | — |
| Provider | Google LLC (Vertex AI) | OpenAI Inc. |
Questions people ask
Is kimi-k2 better than gpt-4.1?
gpt-4.1 outperforms kimi-k2 on 4 of 6 shared benchmarks. See the benchmark comparison above for specifics — kimi-k2 and gpt-4.1 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — kimi-k2 or gpt-4.1?
kimi-k2 is cheaper. kimi-k2 costs $0.60/$2.50 per 1M input/output tokens, while gpt-4.1 costs $2.00/$8.00.
Can I use kimi-k2 and gpt-4.1 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch — "vertex/kimi-k2" or "openai/gpt-4.1" — no other code changes needed.
What are the context windows?
kimi-k2 supports up to 262K tokens of context. gpt-4.1 supports up to 1.0M 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 kimi-k2 and gpt-4.1 with one line of code
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