moonshotai

MoonshotAI: Kimi K2 0905

MoonshotAI's Kimi K2 0905 is designed for text-based tasks with a context length of up to 262,144 tokens and can generate up to 100,352 completion tokens. It supports input through text alone and can interface with external tools but lacks reasoning capabilities or structured output formats. Given its blended benchmark score of 38.1 across one independent test, Kimi K2 0905 stands as a solid option for those prioritizing cost-effectiveness, particularly in scenarios requiring tool integration. With pricing at $0.6 per million input tokens and $2.5 per million output tokens, it offers competitive value while performing adequately on benchmark tests; however, its performance may not be the top choice if high reasoning requirements are necessary.

Quality Score
93/100
price + capability + benchmarks
Input Price
$0.60
per 1M tokens
Output Price
$2.50
per 1M tokens
Context Window
262,144
tokens

Benchmark results

Independent, published benchmarks. Blended score 37.7 across 1 benchmark, last refreshed 2026-07-27. How scoring works →

BenchmarkMeasuresScore
AI Index broad capability composite 38.8
Model ID
moonshotai/kimi-k2-0905
Vendor
moonshotai
Released
September 2025
Tokenizer
Other
Input Modalities
text
Output Modalities
text
Max Output
100,352 tokens
Tool Calling
✓ supported
Structured Output
✓ supported
Reasoning Mode
not supported
Vision
text only
Audio
no
Moderated
no

What it costs in practice

Computed from the current $0.60/M input and $2.50/M output rates. Run your own numbers →

JobTokensCost
Summarize a 50-page report 30k in / 1.5k out $0.02
Classify 1,000 customer emails 500k in / 50k out $0.42
A month of a busy support chatbot 5M in / 2M out $8.00

Similar models

Quick answers

How much does MoonshotAI: Kimi K2 0905 cost?
$0.60 per million input tokens and $2.50 per million output tokens.
What is MoonshotAI: Kimi K2 0905's context window?
262,144 tokens, roughly 393 pages of text in a single request.
Does MoonshotAI: Kimi K2 0905 support tool calling?
It supports tool calling, structured output.
Can MoonshotAI: Kimi K2 0905 process images?
No, it is text-only on the input side.