Kimi K2 Thinking vs Qwen3.5 Plus 2026-04-20
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Kimi K2 Thinking and Qwen3.5 Plus 2026-04-20.
Kimi K2 Thinking
Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...
Qwen3.5 Plus 2026-04-20
Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba. It accepts text, image, and video input and produces text output, with a 1M token context window. This...
Technical Specifications
| Specification | Kimi K2 Thinking | Qwen3.5 Plus 2026-04-20 |
|---|---|---|
| Provider | Moonshot AI | Alibaba |
| Context Window | 262,144 tokens | 1,000,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2025-11-06 | 2026-04-27 |
API Pricing Comparison
Input Price per Million Tokens
Kimi K2 Thinking
$0.60
Qwen3.5 Plus 2026-04-20
$0.30
Output Price per Million Tokens
Kimi K2 Thinking
$2.50
Qwen3.5 Plus 2026-04-20
$1.80
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Kimi K2 Thinking Quirks & Gotchas
No developer gotchas reported.
Qwen3.5 Plus 2026-04-20 Quirks & Gotchas
No developer gotchas reported.