Head-to-head list prices

Qwen3.8 Max vs Kimi K3 API Pricing

Compare verified published API prices for Qwen3.8 Max and Kimi K3. This page compares price, not output quality.

Last verified Oct 28, 2026 · How we verify

Quick answer

Verified Oct 28, 2026, Qwen3.8 Max lists input at $2.00 and output at $6.00 per 1M tokens, while Kimi K3 lists $3.00 input and $15.00 output. Qwen3.8 Max is 33.3% cheaper on input. Qwen3.8 Max is 60% cheaper on output. This is a comparison of published prices only, not output quality.

ModelInput $/1MCached input $/1MOutput $/1MSourceLast verified How we verify
Qwen3.8 Max$2.00$0.25$6.00Official sourceOct 28, 2026
Kimi K3$3.00$0.30$15.00Official sourceOct 25, 2026

Prices from official provider pages, verified on the date shown.

Published rates

Side-by-side API pricing

FieldQwen3.8 MaxKimi K3
ProviderAlibabaMoonshot AI
Input / 1M$2.00$3.00
Cached input / 1M$0.25$0.30
Output / 1M$6.00$15.00
Context window1M1,048,576
Release dateNot listedJul 16, 2026
Official source
How we verify
Alibaba pricing ↗
Last verified Oct 28, 2026
Moonshot AI pricing ↗
Last verified Oct 25, 2026

Standard token prices

Which is cheaper depends on your input:output ratio

Costs below allocate 1M total tokens across each input:output ratio. They use standard prices only, without cache or Batch discounts.

Input:output ratioQwen3.8 MaxKimi K3Cheaper published price
10:1 (RAG / long context)$2.36$4.09Qwen3.8 Max by 42.2%
3:1 (chat)$3.00$6.00Qwen3.8 Max by 50%
1:1$4.00$9.00Qwen3.8 Max by 55.6%
1:3 (long generation)$5.00$12.00Qwen3.8 Max by 58.3%

Computed examples

Monthly cost for real workloads

WorkloadAssumed volumeQwen3.8 MaxKimi K3Difference
Side project10,000 requests/month
8,000,000 input + 3,000,000 output tokens
$34.00$69.00Qwen3.8 Max by $35.00 (50.7%)
Customer support chatbot10,000 conversations/month
121,650,000 input + 10,800,000 output tokens
$308.10$526.95Qwen3.8 Max by $218.85 (41.5%)
Agent task1,000 tasks/month
12,000,000 input + 3,200,000 output tokens
$43.20$84.00Qwen3.8 Max by $40.80 (48.6%)

Assumptions

  • Side project: 10,000 requests per month, with 800 input and 300 output tokens per request.
  • Customer support chatbot: 10,000 conversations, with 6 replies per conversation, 600 system tokens, 90 user-message tokens, 1,000 retrieved-context tokens, 180 output tokens per reply, and 50% history carry.
  • Agent task: 1,000 tasks, with 8 calls per task and 1,500 input plus 400 output tokens per call.
  • All three rows use standard non-cached, non-batch prices and exclude retries, tools, storage, and taxes.

Provider conditions

Pricing rules that can change the answer

Kimi K3

Official pricing notes: Automatic prefix caching uses the cache-hit rate for eligible repeated prefixes of more than 256 tokens. K3 reasoning is always enabled; reasoning tokens are billed as output tokens. No current K3 Batch price is published in the canonical contract.

Full Kimi K3 pricing components

Verified changes

Price history

  1. First observed on Oct 28, 2026; Alibaba Qwen did not publish an effective date. Alibaba Qwen added Qwen3.8 Max with published input $2.00 and output $6.00 per 1M tokens.

    View this update in the price monitor

Operational costs

Cheaper per token is not always cheaper per task

Retries, failed calls, fallback requests, and longer outputs can raise the cost of completing a task even when the published token price is lower. Model the effect with the LLM Retry & Fallback Cost Calculator, read the cost-per-successful-task guide, or estimate a migration with the Model Switch Cost Calculator.

Primary evidence and next steps

Common questions

Frequently asked questions

Is Qwen3.8 Max cheaper than Kimi K3?

Qwen3.8 Max is 33.3% cheaper on input. Qwen3.8 Max is 60% cheaper on output. This compares published list prices, not output quality.

How much do Qwen3.8 Max and Kimi K3 cost for 10,000 requests a month?

At 800 input and 300 output tokens per request, Qwen3.8 Max costs about $34.00 and Kimi K3 costs about $69.00 at standard list prices.

Which is cheaper for input-heavy workloads like RAG?

At a 10:1 input-to-output token ratio, Qwen3.8 Max costs $2.36 and Kimi K3 costs $4.09 per 1M total tokens. Qwen3.8 Max by 42.2%.

Where do these prices come from?

The prices come from Alibaba and Moonshot AI official pricing sources, verified on Oct 28, 2026 and Oct 25, 2026, respectively.

See the pricing verification methodology and AI API pricing dataset.