Claude 3 Opus vs Kimi K2 0905: Specs & Benchmark Comparison
| Characteristic | Claude 3 Opus | Kimi K2 0905 |
|---|---|---|
| Company | Anthropic | Moonshot AI |
| Release Date | February 29, 2024 | September 5, 2025 |
| Parameters | — | 1.0T |
| Multimodal | Yes | No |
| Context (input) | 200K | 262K |
| Context (output) | 200K | 262K |
| Input Price / 1M | $15.00 | $0.60 |
| Output Price / 1M | $75.00 | $2.50 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| MATH | 0.6 | 0.9 |
| GPQA | 0.5 | 0.8 |
| MMLU-Pro | 0.7 | 0.8 |
| HumanEval | 0.8 | 0.9 |
| MMLU | 0.9 | 0.9 |
Visual Benchmark Comparison
Claude 3 Opus
Kimi K2 0905
MATH0.6 vs 0.9
0.6
0.9
GPQA0.5 vs 0.8
0.5
0.8
MMLU-Pro0.7 vs 0.8
0.7
0.8
HumanEval0.8 vs 0.9
0.8
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 Opus — 0.8, Kimi K2 0905 — 0.8.
API Cost
Kimi K2 0905 is 29.0x cheaper: input $0.60/1M vs $15.00/1M 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 2/29/2024.
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Frequently Asked Questions
Which is better for coding — Claude 3 Opus 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 Opus or Kimi K2 0905?
Kimi K2 0905 is cheaper for input: $0.60 per 1M tokens vs $15.00.
Which has a larger context window — Claude 3 Opus or Kimi K2 0905?
Kimi K2 0905 supports a larger context: 262,144 tokens vs 200,000.
The Claude 3 Opus 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 Opus or Kimi K2 0905 page. See also the complete list of AI model comparisons.