gemini-2.5-flash vs kimi-k2
Side-by-side comparison of gemini-2.5-flash and kimi-k2— benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. kimi-k2 outperforms gemini-2.5-flash on 11 of 11 shared benchmarks.
gemini-2.5-flash
Input / 1M
$0.30
Output / 1M
$2.50
Context
1.0M
Model ID
google/gemini-2.5-flash
kimi-k2
Input / 1M
$0.60
Output / 1M
$2.50
Context
262K
Model ID
vertex/kimi-k2
Benchmark comparison
Intelligence Indexreasoning
gemini-2.5-flash27.0%
kimi-k240.9%
Coding Indexcoding
gemini-2.5-flash22.2%
kimi-k234.8%
Math Indexmath
gemini-2.5-flash73.3%
kimi-k294.7%
GPQA Diamondreasoning
gemini-2.5-flash79.0%
kimi-k283.8%
AIME 2025math
gemini-2.5-flash73.3%
kimi-k294.7%
LiveCodeBenchcoding
gemini-2.5-flash69.5%
kimi-k285.3%
Terminal-Bench Hardagentic
gemini-2.5-flash13.6%
kimi-k231.1%
τ²-Benchagentic
gemini-2.5-flash31.6%
kimi-k293.0%
SciCodecoding
gemini-2.5-flash39.4%
kimi-k242.4%
MMLU Proknowledge
gemini-2.5-flash83.2%
kimi-k284.8%
Humanity's Last Examreasoning
gemini-2.5-flash11.1%
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
| gemini-2.5-flash | kimi-k2 | |
|---|---|---|
| Input price / 1M | $0.30 | $0.60 |
| Output price / 1M | $2.50 | $2.50 |
| Context window | 1.0M tokens | 262K tokens |
| Max output | 66K tokens | 262K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | — | — |
| Provider | Google LLC (Gemini API) | Google LLC (Vertex AI) |
Questions people ask
Is gemini-2.5-flash better than kimi-k2?
kimi-k2 outperforms gemini-2.5-flash on 11 of 11 shared benchmarks. See the benchmark comparison above for specifics — gemini-2.5-flash and kimi-k2 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — gemini-2.5-flash or kimi-k2?
gemini-2.5-flash is cheaper. gemini-2.5-flash costs $0.30/$2.50 per 1M input/output tokens, while kimi-k2 costs $0.60/$2.50.
Can I use gemini-2.5-flash 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 — "google/gemini-2.5-flash" or "vertex/kimi-k2" — no other code changes needed.
What are the context windows?
gemini-2.5-flash 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 gemini-2.5-flash and kimi-k2 with one line of code
Requesty provides a single OpenAI-compatible API for 400+ models. Change the model parameter, not your code.
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