kimi-k2 vs grok-4
Side-by-side comparison of kimi-k2 and grok-4— benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. grok-4 outperforms kimi-k2 on 7 of 11 shared benchmarks.
kimi-k2
Input / 1M
$0.60
Output / 1M
$2.50
Context
262K
Model ID
vertex/kimi-k2
xAI Corp.
grok-4
Input / 1M
$3.00
Output / 1M
$15.00
Context
256K
Model ID
xai/grok-4
Benchmark comparison
Intelligence Indexreasoning
kimi-k240.9%
grok-441.5%
Coding Indexcoding
kimi-k234.8%
grok-440.5%
Math Indexmath
kimi-k294.7%
grok-492.7%
GPQA Diamondreasoning
kimi-k283.8%
grok-487.7%
AIME 2025math
kimi-k294.7%
grok-492.7%
LiveCodeBenchcoding
kimi-k285.3%
grok-481.9%
Terminal-Bench Hardagentic
kimi-k231.1%
grok-437.9%
τ²-Benchagentic
kimi-k293.0%
grok-474.9%
SciCodecoding
kimi-k242.4%
grok-445.7%
MMLU Proknowledge
kimi-k284.8%
grok-486.6%
Humanity's Last Examreasoning
kimi-k222.3%
grok-423.9%
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 | grok-4 | |
|---|---|---|
| Input price / 1M | $0.60 | $3.00 |
| Output price / 1M | $2.50 | $15.00 |
| Context window | 262K tokens | 256K tokens |
| Max output | 262K tokens | — |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | — |
| Prompt caching | Yes | Yes |
| Computer use | — | Yes |
| Provider | Google LLC (Vertex AI) | xAI Corp. |
Questions people ask
Is kimi-k2 better than grok-4?
grok-4 outperforms kimi-k2 on 7 of 11 shared benchmarks. See the benchmark comparison above for specifics — kimi-k2 and grok-4 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — kimi-k2 or grok-4?
kimi-k2 is cheaper. kimi-k2 costs $0.60/$2.50 per 1M input/output tokens, while grok-4 costs $3.00/$15.00.
Can I use kimi-k2 and grok-4 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 "xai/grok-4" — no other code changes needed.
What are the context windows?
kimi-k2 supports up to 262K tokens of context. grok-4 supports up to 256K 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 grok-4 with one line of code
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