Kimi K2.6 vs Grok 4.5
Moonshot AI against xAI, costed on the same three workloads. Kimi K2.6 is cheaper on all three workloads.
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Monthly bill, side by side
| Workload | Kimi K2.6 | Grok 4.5 | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$3,522 | $6,435 | $2,913 (1.8×) |
| Document summarizer 1,000 single-shot summaries a day |
$444 | $876 | $432 (2×) |
| Coding agent 200 twelve-turn sessions a day |
$2,533 | $4,896 | $2,363 (1.9×) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| Kimi K2.6 | Grok 4.5 | |
|---|---|---|
| Input, per 1M tokens | $0.95 | $2 |
| Output, per 1M tokens | $4 | $6 |
| Cached input | $0.16 | $0.3 |
| Context window | 262K | 500K |
| Maximum output | 262K | 500K |
| Reasoning model | yes | yes |
| Vision | yes | yes |
Beyond the price
- Grok 4.5 reads up to 500K tokens of context in one request; Kimi K2.6 stops at 262K.
- Grok 4.5 can write up to 500K tokens in one response, against 262K for Kimi K2.6.
Run this comparison on your own numbers
Full detail: Kimi K2.6 pricing · Grok 4.5 pricing
More comparisons
Other head-to-heads that include Kimi K2.6 or Grok 4.5.
- Kimi K2.6 vs Qwen 3.7 Max
- Kimi K2.6 vs Gemini 3.1 Pro
- Kimi K2.6 vs Gemini 3.6 Flash
- Grok 4.5 vs Claude Sonnet 4.6
- Grok 4.5 vs Qwen 3.7 Max
- Grok 4.5 vs Gemini 3.7 Flash
Common questions
Which is cheaper, Kimi K2.6 or Grok 4.5?
Kimi K2.6 is cheaper on all three workloads.
How much would Kimi K2.6 and Grok 4.5 cost each month?
On PromptSpend's standard workloads, per month: support chatbot: Kimi K2.6 $3,522, Grok 4.5 $6,435 (Kimi K2.6 is cheaper by $2,913); document summarizer: Kimi K2.6 $444, Grok 4.5 $876 (Kimi K2.6 is cheaper by $432); coding agent: Kimi K2.6 $2,533, Grok 4.5 $4,896 (Kimi K2.6 is cheaper by $2,363). No prompt caching and no batch discount is assumed.
How do Kimi K2.6 and Grok 4.5 differ apart from price?
Grok 4.5 reads up to 500K tokens of context in one request; Kimi K2.6 stops at 262K. Grok 4.5 can write up to 500K tokens in one response, against 262K for Kimi K2.6.