Kimi-K2-Instruct-0905 vs Gemini 3.1 Flash Lite Preview

API pricing, benchmark indices and specs — updated 19 October 2026.

moonshotai · A · Open weights
Params
1,026.5 B
Context
262,144
30d
32 K
google · B · API-only
Input / 1M
$0.25
Output / 1M
$1.50
AA index
15.6
proprietary · 1M context

Specification comparison

Differences are highlighted; identical values are muted.

Specification Kimi-K2-Instruct-0905 Gemini 3.1 Flash Lite Preview
Deployment Open weights · also via API API-only (closed weights)
Parameters 1,026.5 B n/a — API-only
Architecture DeepseekV3ForCausalLM n/a — API-only
Context length 262,144 1,048,576
Licence other Proprietary
Commercial use Unknown Per API terms
Languages — n/a — API-only
Downloads 30d 31,918 n/a — API-only
Downloads all time 5.2 M n/a — API-only
Quantizations on the Hub SAFETENSORS n/a — API-only
Gated No n/a — API-only
First seen on the Hub 2025-09-03 n/a — API-only
API input price / 1M tokens $0.60 $0.25
API output price / 1M tokens $2.50 $1.50
Est. cost per 1M input + 1M output tokens $3.10 $1.75
Cached input / 1M tokens — $0.025
AA Intelligence Index 15.3 15.6
AA Coding Index — 34.7
AA Agentic Index — 1.6
Max output tokens 98,304 65,536
API providers 1 1
Tool calling Yes Yes
Reasoning mode No Yes

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

Kimi-K2-Instruct-0905 $3.10
Gemini 3.1 Flash Lite Preview $1.75

Gemini 3.1 Flash Lite Preview is 1.8× cheaper at list price.

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

Kimi-K2-Instruct-0905 · fp16 @ 256K ctx 6,059.7 GB / 24 GB
❌ Won’t fit

Adjacent comparisons