Claude Sonnet 5 vs Kimi K3: Specs & Benchmark Comparison

CharacteristicClaude Sonnet 5Kimi K3
CompanyAnthropicMoonshot AI
Release DateJune 30, 2026July 16, 2026
Parameters2.8T
MultimodalYesYes
Context (input)1.0M1.0M
Context (output)64K1.0M
Input Price / 1M$2.00$3.00
Output Price / 1M$10.00$15.00
Average Score0.61.0

Verdict

Both models show equal results — the choice depends on your specific use case.

Overall Performance

Both models show comparable average scores: Claude Sonnet 5 — 0.6, Kimi K3 — 1.0.

API Cost

Claude Sonnet 5 is 1.5x cheaper: input $2.00/1M vs $3.00/1M tokens.

Context Window

Same context size: 1M tokens.

Recency

Kimi K3 is newer: released 7/16/2026 vs 6/30/2026.

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Frequently Asked Questions

Which is better for coding — Claude Sonnet 5 or Kimi K3?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude Sonnet 5 or Kimi K3?
Claude Sonnet 5 is cheaper for input: $2.00 per 1M tokens vs $3.00.
Which has a larger context window — Claude Sonnet 5 or Kimi K3?
Claude Sonnet 5 supports a larger context: 1,000,000 tokens vs 1,000,000.

The Claude Sonnet 5 and Kimi K3 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Sonnet 5 or Kimi K3 page. See also the complete list of AI model comparisons.