Kimi K3 vs Grok 4.5: API price and specs

Kimi K3 is 73% cheaper than Grok 4.5 on input price.

Kimi K3 is 66% cheaper than Grok 4.5 on output price.

Kimi K3 is 70% cheaper than Grok 4.5 on a 1M-in / 200k-out workload.

Kimi K3 has a 109.7% larger context than Grok 4.5.

Field	Kimi K3	Grok 4.5
Lowest input, per 1M	$0.44	$1.60 +263.6%
Median input, per 1M	$3.00 +50%	$2.00
Lowest output, per 1M	$1.61	$4.80 +197.5%
Median output, per 1M	$15.00 +150%	$6.00
Lowest unit price	—	—
Cost of 1M in + 200k out	$0.76	$2.56 +235.7%
Context	1M	500K +52.3%
Max output	1M	500K +52.3%
Providers	60	26 +56.7%
Regions	APAC, EU, GLOBAL, US	US
Accepts	application/pdf, file, image, image/bmp, image/gif, image/heic, image/heif, image/jpeg, image/png, image/webp, pdf, text, video, video/3gpp, video/avi, video/mov, video/mp4, video/mpeg, video/mpg, video/webm, video/wmv, video/x-flv	file, image, image/jpeg, image/png, pdf, text
Returns	text	text
Type	Text models	Text models
Free option	yes	no
Cheapest provider	aihubmix	cometapi

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

302ai, abacus, aihubmix, aiml, cometapi, edenai, fastrouter, github-copilot, impossibl, jiekou, kenari, kilo, meganova, ofox, opencode, opencode-go, openrouter, orcarouter, perplexity-agent, poe, requesty, trustedrouter, vercel, zenmux

Frequently asked questions

Which is cheaper, Kimi K3 or Grok 4.5?

Kimi K3 is 73% cheaper than Grok 4.5 on input price. Kimi K3 is 66% cheaper than Grok 4.5 on output price. Kimi K3 is 70% cheaper than Grok 4.5 on a 1M-in / 200k-out workload.

Which has the larger context, Kimi K3 or Grok 4.5?

Kimi K3: 1M tokens; Grok 4.5: 500K tokens.

Where can I use both Kimi K3 and Grok 4.5?