← Models

Alicloud Kimi K2 Instruct vs Grok 4.5

Compare Alicloud Kimi K2 Instruct from Moonshot AI and Grok 4.5 from Grok on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

Moonshot AIAlicloud Kimi K2 InstructGrokGrok 4.5
+ Add model · 2/4
Moonshot AI logo
Alicloud Kimi K2 Instruct
Moonshot AI · → text

Kimi-K2 is a MoE architecture foundational model with extremely powerful coding and agent capabilities, featuring a total of 1 trillion parameters and activating 32 billion parameters. In benchmark performance tests across major categories such as general knowledge reasoning, programming, mathematics, and agents, the K2 model outperforms other mainstream open-source models. The Kimi-K2 model supports a context length of 128k tokens. It does not support visual capabilities.

Input$0.548 /M
Output$2.192 /M
Details
Grok logo
Grok 4.5
Grok · text, image → text

Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.

Input$2 /M
Output$6 /M
Cache read$0.5 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Alicloud Kimi K2 Instruct
Grok 4.5
Input /M
$0.548
$2
Output /M
$2.192
$6
Cache read /M
-
$0.5
Context length
0
500,000
Max output
0
500,000
Time to First Token
1.2 s
4.4 s
Throughput
0.8 tok/s
34.2 tok/s
Modalities
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
-
July 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

alicloud-kimi-k2-instructgrok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

alicloud-kimi-k2-instructgrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
alicloud-kimi-k2-instructgrok-4.5
1360142014801540
Overall
14181471
Coding
14671523
Math
14161479
Hard prompts
14371495
Instruction following
13901466
Multi-turn
14041476
Creative writing
13821451
Longer query
14031487
Chinese
14541512
English
14231476

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Alicloud Kimi K2 Instruct
$65.76 /mo
Grok 4.5
$210 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Alicloud Kimi K2 Instruct, Grok 4.5?

Alicloud Kimi K2 Instruct: $2.192/M output tokens; Grok 4.5: $6/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; Alicloud Kimi K2 Instruct: 1467 (LMArena coding leaderboard).

Which responds faster?

Alicloud Kimi K2 Instruct: 1.2s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

Which one generates tokens faster?

Grok 4.5 at 34.2 tok/s and Alicloud Kimi K2 Instruct at 0.8 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

Can I call Alicloud Kimi K2 Instruct and Grok 4.5 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

Popular comparisons

Related model match-ups readers also look at.

Kimi K3vsQwen3.8 Max PreviewClaude Opus 5vsGPT 5.6 LunaClaude Opus 5vsClaude Sonnet 5Gemini 3.1 Pro PreviewvsGPT 5.5GLM 5.2vsKimi K3Gemini 3.6 FlashvsQwen3.8 MaxDeepSeek V4 FlashvsGLM 5.2Claude Opus 5vsGrok 4.5

© 2023 - 2026 AIHubMix, LLC

Product

Developer

Company

Terms & Policies