Claude Opus 5.5 vs Kimi K3: Pricing and Specs
Claude Opus 5.5 $4 / $20 vs Kimi K3 $3 / $15 per 1M tokens in / out.
| Claude Opus 5.5 | Kimi K3 | |
|---|---|---|
| Maker | Anthropic | Moonshot AI |
| Input, per 1M tokens | $4 | $3 |
| Output, per 1M tokens | $20 | $15 |
| Context window | 1M tokens claude.com | 1,048,576 tokens kimi.ai |
| Max output | 128K tokens claude.com | Not published in the docs we read |
| Input types | Text, Image claude.com | Not published in the docs we read |
| Output types | Text claude.com | Not published in the docs we read |
| Released | Sep 22, 2026 claude.com | Not published in the docs we read |
| Retirement | Not sooner than September 22, 2027 claude.com | Not published in the docs we read |
| Price checked | Nov 9, 2026 anthropic.com | Nov 9, 2026 kimi.ai |
| Tracked changes | 1 | 0 |
Facts side by side from each maker's own pages. No score and no verdict.
Recent changes
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Questions
Which is cheaper, Claude Opus 5.5 or Kimi K3
By listed price, Kimi K3 is lower: $3 vs $4 per 1M input tokens. Price is the only thing this answer compares.
What do 1M input and 1M output tokens cost on each
Claude Opus 5.5: $24. Kimi K3: $18. Listed standard prices, before caching or batch discounts.
What context window does each have
Claude Opus 5.5: 1M tokens. Kimi K3: 1,048,576 tokens. From each maker's docs.
Who makes Claude Opus 5.5 and Kimi K3
Claude Opus 5.5 is made by Anthropic. Kimi K3 is made by Moonshot AI.