Claude Opus 4.8 vs Kimi K3
Side-by-side comparison. Updated 2026-07-16.
Summary
Compare Claude Opus 4.8 and Kimi K3 across pricing, context window, modalities, strengths, weaknesses, and best-fit workloads.
Use the details below to weigh cost, context, modalities, and workload fit.
At a Glance
| Attribute | Claude Opus 4.8 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | Moonshot |
| Tags | Intelligent Reasoning Agentic Multimodal | Intelligent Reasoning Coding Agentic Open Weight Multimodal Image Input Long Context |
| Context | 1,000,000 tokens | 1,048,576 tokens |
| Input price | $15.00/1M | $3.00/1M |
| Output price | $75.00/1M | $15.00/1M |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
Claude Opus 4.8 Strengths
- Top-tier coding and reasoning benchmarks
- 1M token context window
- Strong agentic workflow support
- Wide cloud provider availability
Kimi K3 Strengths
- Supports text and image input with text output
- Million-token context window for very long tasks
- Tool-use support for agentic workflows
- Structured output support for reliable application integration