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#342

Kimi K3.1 Pro

Moonshot AI Release: 2026-10-24 Tested on: 2026-10-24 15:44 moonshotai/kimi-k3.1-pro::max
~2.8T total (~104B active)MoEClosedEstimated
(max) (high) (low)

Summary

Kimi K3.1 Pro scores 5.2 on AI BENCHY and ranks #342. It has 7.0 reliability, a 46.4% pass rate, $1.395 total cost, and 80.63s average response time.

What makes Kimi K3.1 Pro unique: It stands out most in Coding, where it ranks #1, while Instructions following is its weakest area at #15.

Model facts

Researched on 2026-10-24

Estimated
Parameters
~2.8T total (~104B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. API-only exact checkpoint on the research date. Moonshot says the full weights will be released by November 4; do not classify promised weights as available. Total and active parameter values are estimates inherited from the Kimi K3 backbone because the official Pro blog describes a post-trained K3 without restating exact counts. Native K3.1 Pro documentation requires thinking with low/high/max, which are the benchmarked modes. On the research date, the standard endpoint is $2/$10 per million; the same model has a faster $4/$20 endpoint. These benchmarks use standard speed.

Score

5.2

Consistency

6.4

Total Output Tokens

108,604

Total Input Tokens

154,117

Input Price

$2.000 / 1M

Output Price

$10.000 / 1M

Cache Read Price

$0.200 / 1M

Cache Write Price

N/A

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 17

Attempt pass rate: 46.4%

Flaky tests

10

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

80.63s

Response Time (max): 643.58s

Response Time (total): 1854.50s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#342 MoonshotAI: Kimi K3.1 Pro

max
Cost
$0.193
Time
387.5s
Tokens
19,362 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-24 20:12 Re-test 8.7 7.1 $3.578 Compare
2026-10-24 15:44 Initial run 5.2 7.0 $1.395 Current run

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Category Breakdown

Category Score Consistency Tests Correct
Agentic 3.0 10.0
Anti-AI Tricks 6.4 5.8
Coding 6.4 4.4
Combined 5.1 2.7
Data parsing and extraction 6.5 10.0
Domain specific 3.0 10.0
General Intelligence 4.7 1.6
Instructions following 2.8 1.6
Puzzle Solving 5.3 7.2
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models