MoonshotAI: Kimi K2.5 vs OpenAI: gpt-oss-20b (free)
Side-by-side comparison of MoonshotAI: Kimi K2.5 and OpenAI: gpt-oss-20b (free). Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidenceMoonshotAI: Kimi K2.5 leads overall
MoonshotAI: Kimi K2.5 leads in context window and capabilities and max output, making it the stronger choice for most workflows. OpenAI: gpt-oss-20b (free) remains competitive with advantages in price.
Best for with MoonshotAI: Kimi K2.5
Best for with OpenAI: gpt-oss-20b (free)
Side-by-side
Technical specifications
| MoonshotAI: Kimi K2.5 | OpenAI: gpt-oss-20b (free) | |
|---|---|---|
| Provider | Kimi / Moonshot AI | OpenAI |
| Input price | $0.38/M | $0.00/M |
| Output price | $2/M | $0.00/M |
| Context window | 262K | 131K |
| Max output | 262K | 131K |
| Capabilities | Tool useVisionReasoning | Tool useReasoning |
| Released | Jan 26, 2026 | Aug 5, 2025 |
Scoring breakdown
How each dimension compares
Price
OpenAI: gpt-oss-20b (free) leadsMoonshotAI: Kimi K2.5
$2/M tokens
OpenAI: gpt-oss-20b (free)
$0.00/M tokens
Context Window
MoonshotAI: Kimi K2.5 leadsMoonshotAI: Kimi K2.5
262K tokens
OpenAI: gpt-oss-20b (free)
131K tokens
Capabilities
MoonshotAI: Kimi K2.5 leadsMoonshotAI: Kimi K2.5
3/4
OpenAI: gpt-oss-20b (free)
2/4
Max Output
MoonshotAI: Kimi K2.5 leadsMoonshotAI: Kimi K2.5
262K tokens
OpenAI: gpt-oss-20b (free)
131K tokens
Recency
MoonshotAI: Kimi K2.5
Jan 2026
OpenAI: gpt-oss-20b (free)
Aug 2025
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