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Kimi K3.1 Pro

Name: Kimi K3.1 Pro
Author: Moonshot AI

Post-trained successor to Kimi K3 (same 2.8T/104B-active architecture) for long-horizon coding, finance and office agents; thinking always on (low/high/max). Moonshot says weights land by Nov 4, 2026 (not downloadable as of Nov 1; licence not yet named). Cache hit $0.20; Highspeed endpoint $4/$20. Moonshot reports HLE 70.0 with tools, Terminal-Bench 4.0 65.7.

Released

Oct 23, 2026

Price in / out

$2 / $10

Blended $/1M

Context

1.05M

Parameters: 2.8T / 104B active.

Benchmark scoresvs Kimi K3

Benchmark	Score	Δ vs prior	Rank (current)	Configuration	Source
GPQA Diamond	94.2%	+0.7	#3 of 22	Moonshot-reported, max effort · lab-reported	benchlm.ai ↗
Humanity's Last Exam	52.5%	+9.0	#8 of 36	Artificial Analysis run, no tools (2,158 text-only questions); Moonshot reports 51.1 no tools, 70.0 with tools · independent run	artificialanalysis.ai ↗
Artificial Analysis Intelligence Index	46	-11.1	#9 of 33	Artificial Analysis Intelligence Index v5 · independent run	artificialanalysis.ai ↗

Version

$ in / out

Terminal-Bench

SWE-bench

GPQA

HLE

ARC-AGI-2

AIME

Kimi K2Superseded

$0.6 / $2.5

—

65.8%

—

Kimi K2.5Superseded

$0.6 / $2.5

41.9%

76.8%

87.6%

30.1%

—

95.8%

Kimi K2.6Superseded

$0.6 / $2.5

53.6%

80.2%

90.5%

34.7%

—

96.4%

Kimi K2.7 CodeSuperseded

$0.95 / $4

67%

—

89.6%

35%

—

Kimi K3Superseded

$3 / $15

80.9%

93.4%

93.5%

43.5%

60.4%

—

Kimi K3.1 Pro

$2 / $10

—

94.2%

52.5%

—

Kimi K3.1 Pro

Benchmark scoresvs Kimi K3

Kimi versions

Compare

Shipping with it?

Current open-weight peers

Version	Released	$ in / out	Terminal-Bench	SWE-bench	GPQA	HLE	ARC-AGI-2	AIME
Kimi K2Superseded	2025-07-11	$0.6 / $2.5	—	65.8%	—	—	—	—
Kimi K2.5Superseded	2026-01-27	$0.6 / $2.5	41.9%	76.8%	87.6%	30.1%	—	95.8%
Kimi K2.6Superseded	2026-04-20	$0.6 / $2.5	53.6%	80.2%	90.5%	34.7%	—	96.4%
Kimi K2.7 CodeSuperseded	2026-06-15	$0.95 / $4	67%	—	89.6%	35%	—	—
Kimi K3Superseded	2026-07-16	$3 / $15	80.9%	93.4%	93.5%	43.5%	60.4%	—
Kimi K3.1 Pro	2026-10-23	$2 / $10	—	—	94.2%	52.5%	—	—