Kimi K2.6 vs Claude Sonnet 4.6 — LLM API Cost Comparison
Compare Kimi K2.6 (Kimi (Moonshot AI)) vs Claude Sonnet 4.6 (Anthropic) on cost per million tokens, context window, and monthly spend.
Prices verified 2026-05-20 · Pricing may change — use the calculator for current estimates
- Input
- $1/1M tokens
- Output
- $4/1M tokens
- Context
- 128K tokens
- Released
- 2026-04
Latest Moonshot flagship; top-tier code generation & long-context reasoning
- Input
- $3/1M tokens
- Output
- $15/1M tokens
- Context
- 1M tokens
- Released
- 2026-04
Best speed/intelligence balance; extended thinking supported
Monthly Cost by Usage Tier (70% input / 30% output ratio)
| Usage | Kimi K2.6 | Claude Sonnet 4.6 | Cheaper by |
|---|---|---|---|
| Light (1M tokens) | $1.90 | $6.60 | Kimi K2.6 (71%) |
| Moderate (10M tokens) | $19.00 | $66.00 | Kimi K2.6 (71%) |
| Heavy (100M tokens) | $190 | $660 | Kimi K2.6 (71%) |
| Very Heavy (1B tokens) | $1,900 | $6,600 | Kimi K2.6 (71%) |
Frequently Asked Questions
Which is cheaper — Kimi K2.6 or Claude Sonnet 4.6?
For input tokens, Kimi K2.6 is cheaper at $1/1M tokens — 3.0× less than $3/1M. For output tokens, Kimi K2.6 wins at $4/1M vs $15/1M. At heavy workloads (100M tokens/month), the cost difference can be significant.
What is the context window difference between Kimi K2.6 and Claude Sonnet 4.6?
Kimi K2.6 supports 128,000 tokens per request; Claude Sonnet 4.6 supports 1,000,000 tokens. Claude Sonnet 4.6 wins on context length, making it better for long documents, large codebases, or extended conversations without chunking.
When should I choose Kimi K2.6 over Claude Sonnet 4.6?
Choose Kimi K2.6 (Kimi (Moonshot AI)) if you prefer Kimi (Moonshot AI)'s ecosystem, tooling, or reliability track record. Latest Moonshot flagship; top-tier code generation & long-context reasoning. Choose Claude Sonnet 4.6 (Anthropic) if Best speed/intelligence balance; extended thinking supported. the price/performance fits your workload better. Use this calculator to find the break-even point for your exact token volume.
How much does 1 billion tokens cost on Kimi K2.6 vs Claude Sonnet 4.6?
At 700M input + 300M output tokens (1B total): Kimi K2.6 costs $1900; Claude Sonnet 4.6 costs $6600. The difference is $4700/billion tokens at this 70/30 input/output ratio.