LLM Comparison

GPT-5.4 Nano vs Kimi K2.5

Side-by-side specs, pricing & capabilities · Updated April 2026

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2/6 models
Same tier:
 OpenAIGPT-5.4 Nano
K
Kimi K2.5
OrganizationOpenAIOpenAIMoonshot AI
OpenTools Score
FamilyGPTKimi
StatusCurrentCurrent
Release DateMar 2026Jan 2026
Context Window400K tokens262K tokens
Input Price$0.20/M tokens$0.38/M tokens
Output Price$1.25/M tokens$1.72/M tokens
Pricing NotesCache read: $0.0200/M tokensCache read: $0.1913/M tokens
Capabilities
textvisioncode
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Max Output128K tokens66K tokens
API Identifieropenai/gpt-5.4-nanomoonshotai/kimi-k2.5
 View GPT-5.4 NanoView Kimi K2.5

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
GPT-5.4 NanoCheapest$0.20$0.63$0.83—
Kimi K2.5$0.38$0.86$1.24+51%

OpenAI

GPT-5.4 Nano

GPT-5.4 Nano is a multimodal llm from OpenAI. Supports up to 400,000 token context window. Available from $0.20/M input tokens.

Moonshot AI

Kimi K2.5

Kimi K2.5 is a multimodal llm from Moonshot AI. Supports up to 262,144 token context window. Available from $0.38/M input tokens.

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