Claude 3.5 Sonnet vs Kimi K2 0905: Specs & Benchmark Comparison
| Characteristic | Claude 3.5 Sonnet | Kimi K2 0905 |
|---|---|---|
| Company | Anthropic | Moonshot AI |
| Release Date | June 21, 2024 | September 5, 2025 |
| Parameters | — | 1.0T |
| Multimodal | Yes | No |
| Context (input) | 200K | 262K |
| Context (output) | 200K | 262K |
| Input Price / 1M | $3.00 | $0.60 |
| Output Price / 1M | $15.00 | $2.50 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| MATH | 0.7 | 0.9 |
| GPQA | 0.6 | 0.8 |
| MMLU-Pro | 0.8 | 0.8 |
| HumanEval | 0.9 | 0.9 |
| MMLU | 0.9 | 0.9 |
Visual Benchmark Comparison
Claude 3.5 Sonnet
Kimi K2 0905
MATH0.7 vs 0.9
0.7
0.9
GPQA0.6 vs 0.8
0.6
0.8
MMLU-Pro0.8 vs 0.8
0.8
0.8
HumanEval0.9 vs 0.9
0.9
0.9
MMLU0.9 vs 0.9
0.9
0.9
Verdict
Kimi K2 0905 leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude 3.5 Sonnet — 0.8, Kimi K2 0905 — 0.8.
API Cost
Kimi K2 0905 is 5.8x cheaper: input $0.60/1M vs $3.00/1M tokens.
Context Window
Kimi K2 0905 supports a larger context: 262K vs 200K tokens.
Recency
Kimi K2 0905 is newer: released 9/5/2025 vs 6/21/2024.
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Frequently Asked Questions
Which is better for coding — Claude 3.5 Sonnet or Kimi K2 0905?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude 3.5 Sonnet or Kimi K2 0905?
Kimi K2 0905 is cheaper for input: $0.60 per 1M tokens vs $3.00.
Which has a larger context window — Claude 3.5 Sonnet or Kimi K2 0905?
Kimi K2 0905 supports a larger context: 262,144 tokens vs 200,000.
The Claude 3.5 Sonnet and Kimi K2 0905 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude 3.5 Sonnet or Kimi K2 0905 page. See also the complete list of AI model comparisons.