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Kimi model family

Kimi K3.1 Pro Abliterated.

An abliterated variant of Kimi K3.1 Pro for reasoning, code and multi-step work. Its original model is an open-weight, multimodal release post-trained from Kimi K3.

AbliteratedOfficial model reference & HydraLabs internal testing

How we evaluated

Kimi K3.1 Pro Abliterated is a separate model from Neurion Pro and Neurion Flash. The official reference results below describe the original Kimi K3.1 Pro release.

Original context window
1Mtokens
Original total parameters
2.8TMixture-of-Experts
Original active parameters
104Bper token

HydraLabs reports an approximately 2% aggregate benchmark decrease in internal testing of the Abliterated variant.

This aggregate estimate does not adjust individual official scores. The internal test suite, aggregation method and raw runs have not been published; the estimate is not independently verified.

Official benchmark values remain unchanged. Neurion Pro comparisons retain their existing HydraLabs-reported setup. Different harnesses, tool access and task sets can limit direct comparison.

How to read the resultsView the benchmark report

Coding Bench

DeepSWE v1.1

Official Kimi reference results7 results
Reported score only
Original Kimi K3.1 Pro reference results. The Abliterated variant’s reported aggregate change does not alter these scores.
Official Kimi reference results
Notes & sources

The six original comparison columns reproduce Moonshot AI’s published Kimi K3.1 Pro results. These are reference scores for the original model, not measured scores for the Abliterated variant. Neurion Pro is a separate HydraLabs-reported comparison, retained only for an explicitly matching benchmark identity. Harnesses, budgets and task sets can differ. Neurion Flash is not included. Missing results remain —, never zero.

Sampling defaults: reasoning max, temperature 1.0, top-p 0.95; individual source protocols may override these. Elo is not a percentage. Asterisks on HLE values denote text-only subsets. Tool-assisted and unassisted results are separate.

Neurion Pro: HydraLabs-reported internal evaluation · Ultra · mini-swe-agent. Its evaluation protocol is separate from the publisher comparison.

Kimi K3.1 Pro · 75.5

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Fable 5.1 · 67.4

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GPT-6 Astra · 74.1

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Opus 5.5 · 74.2

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
DeepSeek-V4.1-Flash-1017 · 77.0

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GLM-5.3 · 66.9

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Neurion Pro · 70.3% — Ultra

HydraLabs-reported internal evaluation · Ultra · mini-swe-agent

HydraLabs-reported Neurion Pro result

Agentic Bench

BrowseComp

Official Kimi reference results3 results
Reported score only
Original Kimi K3.1 Pro reference results. The Abliterated variant’s reported aggregate change does not alter these scores.
Official Kimi reference results
Notes & sources

The six original comparison columns reproduce Moonshot AI’s published Kimi K3.1 Pro results. These are reference scores for the original model, not measured scores for the Abliterated variant. Neurion Pro is a separate HydraLabs-reported comparison, retained only for an explicitly matching benchmark identity. Harnesses, budgets and task sets can differ. Neurion Flash is not included. Missing results remain —, never zero.

Sampling defaults: reasoning max, temperature 1.0, top-p 0.95; individual source protocols may override these. Elo is not a percentage. Asterisks on HLE values denote text-only subsets. Tool-assisted and unassisted results are separate.

No exactly mapped Neurion Pro result is supplied for this benchmark.

No result supplied for: Claude Fable 5.1, DeepSeek-V4.1-Flash-1017, GLM-5.3, Neurion Pro.

Kimi K3.1 Pro · 92.1

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GPT-6 Astra · 91.5

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Opus 5.5 · 90.8

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison

Reasoning Bench

GPQA-Diamond

Official Kimi reference results7 results
Reported score only
Original Kimi K3.1 Pro reference results. The Abliterated variant’s reported aggregate change does not alter these scores.
Official Kimi reference results
Notes & sources

The six original comparison columns reproduce Moonshot AI’s published Kimi K3.1 Pro results. These are reference scores for the original model, not measured scores for the Abliterated variant. Neurion Pro is a separate HydraLabs-reported comparison, retained only for an explicitly matching benchmark identity. Harnesses, budgets and task sets can differ. Neurion Flash is not included. Missing results remain —, never zero.

Sampling defaults: reasoning max, temperature 1.0, top-p 0.95; individual source protocols may override these. Elo is not a percentage. Asterisks on HLE values denote text-only subsets. Tool-assisted and unassisted results are separate.

Neurion Pro: HydraLabs-reported internal evaluation · Ultra · MelissaCode · Epoch scope supplied by HydraLabs. Its evaluation protocol is separate from the publisher comparison.

Kimi K3.1 Pro · 94.2

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Fable 5.1 · 93.7

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GPT-6 Astra · 96.1

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Opus 5.5 · 93.9

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
DeepSeek-V4.1-Flash-1017 · 92.2

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GLM-5.3 · 91.7

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Neurion Pro · 94.8% — Ultra

HydraLabs-reported internal evaluation · Ultra · MelissaCode · Epoch scope supplied by HydraLabs

HydraLabs-reported Neurion Pro result

Cyber Bench

ExploitBench

Official Kimi reference results5 results
Reported score only
Original Kimi K3.1 Pro reference results. The Abliterated variant’s reported aggregate change does not alter these scores.
Official Kimi reference results
Notes & sources

The six original comparison columns reproduce Moonshot AI’s published Kimi K3.1 Pro results. These are reference scores for the original model, not measured scores for the Abliterated variant. Neurion Pro is a separate HydraLabs-reported comparison, retained only for an explicitly matching benchmark identity. Harnesses, budgets and task sets can differ. Neurion Flash is not included. Missing results remain —, never zero.

Sampling defaults: reasoning max, temperature 1.0, top-p 0.95; individual source protocols may override these. Elo is not a percentage. Asterisks on HLE values denote text-only subsets. Tool-assisted and unassisted results are separate.

No exactly mapped Neurion Pro result is supplied for this benchmark.

No result supplied for: DeepSeek-V4.1-Flash-1017, Neurion Pro.

Kimi K3.1 Pro · 74.7

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Fable 5.1 · 83.0

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GPT-6 Astra · 100

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
Claude Opus 5.5 · 91.0

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. The source column includes fallback. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison
GLM-5.3 · 54.4

Original Kimi K3.1 Pro publisher comparison; max reasoning unless noted. See the source card for the exact benchmark protocol.

Moonshot AI · official comparison

Model specifications.

Reference architecture and modalities of the original Kimi K3.1 Pro release.

Architecture
Mixture-of-Experts (MoE)
Total / active parameters
2.8T / 104B
Context length
1,048,576 tokens
Modalities
Text and image
Layers / dense layers
93 / 1
Attention layers
69 KDA + 24 Gated DSA
Attention hidden dimension
7,168
Attention heads
96
DSA index head dimension
128
DSA index heads / top-K
32 / 2,048
Latent MoE dimension
3,584
Expert hidden dimension
3,072
Routed / shared experts
896 / 2
Selected experts per token
16
Vocabulary
160K
Activation
SiTU-GLU
Vision encoder
MoonViT-V2 · 401M parameters
Quantization
MXFP4 weights / MXFP8 activations
Original model specifications

The full benchmark report.

Coding, agentic, reasoning and cybersecurity results.

All 47 official rows remain unchanged. Neurion Pro is shown separately where an exact benchmark match exists; Neurion Flash is not included.

Official Kimi reference and Neurion Pro comparison
BenchmarkKimi K3.1 ProClaude Fable 5.1GPT-6 AstraClaude Opus 5.5DeepSeek-V4.1-Flash-1017GLM-5.3Neurion Pro
Terminal-Bench 4.065.757.958.266.442.341.853.2% — Ultra
Terminal-Bench-Science 0.138.140.068.163.315.78.1—
SWE Marathon v1.151.745.642.546.340.042.5—
BenchCAD w/o tools72.860.6—73.041.2——
BenchCAD w/ tools92.792.695.996.281.6——
Program Bench31.553.550.065.029.119.0—
DeepSWE v1.175.567.474.174.277.066.970.3% — Ultra
PostTrain Bench v1.236.544.641.943.830.534.5—
Kimi Code Bench 2.0 (Internal)77.1———76.161.7—
Kimi Code Bench 3.0 Long-horizon (Internal)61.258.866.558.551.545.5—
HLE-Full w/ tools70.065.657.267.758.862.5—
BrowseComp92.1—91.590.8———
BioMysteryBench80.681.678.981.980.079.6—
CharXiv (RQ) w/ python93.492.792.893.885.6——
MMMU-Pro w/ python90.088.487.889.882.5——
GDP.pdf w/ python85.783.885.583.973.0——
ChartoGraphy w/ python90.288.491.089.083.0——
BabyVision w/ python95.495.196.697.792.5——
ZeroBench_main w/ python (pass@5)63.059.058.061.051.0——
Agents' Last Exam (ALL)43.2—41.842.637.726.2—
Agents' Last Exam (CLI)44.2—44.240.736.029.4—
Automation Bench-AA73.359.468.569.566.662.2—
GDPval-AA v2.1 (Elo-score)184617541573186617461650—
AA-Briefcase v1.1 (Elo-score)167816721569180315701507—
APEX-Agents69.468.664.773.569.856.6—
OfficeQA Pro v264.454.554.462.240.431.1—
OfficeQA Pro67.468.666.2—62.458.6—
Frontier Finance58.660.845.056.754.557.5—
HANDBOOK.md44.638.8—41.528.920.8—
OSWorld V2.179.680.775.881.869.3——
Business Operation (Internal)37.830.732.3—8.918.6—
DECK-Arena (Internal, Elo-score)1456—1423125312311119—
Design Bench (Internal, Elo-score)957—1076927863718—
Kimi Hallu Bench Hard w/ tools (Internal, lower is better)8.323.35.515.023.322.6—
GDP.pdf34.627.634.230.617.211.2—
HLE-Full51.157.653.659.842.643.0*—
HLE-Diamond39.455.165.860.921.625.1*—
GPQA-Diamond94.293.796.193.992.291.794.8% — Ultra
CharXiv (RQ)89.088.890.092.177.0——
MMMU-Pro84.186.386.987.780.6——
ZeroBench_main (avg@5 / pass@5)29.8 / 39.023.0 / 35.043.2 / 52.035.0 / 43.011.8 / 23.0——
PerceptionBench68.363.077.672.147.7——
Kimi Hallu Bench w/o tools (Internal, lower is better)5.411.44.26.813.114.8—
ExploitBench74.783.010091.0—54.4—
ExploitGym20.730.442.434.5—15.0—
xdev-bench-hard (Internal)81.0———85.757.1—
Evaluation notes & sources

The six original comparison columns reproduce Moonshot AI’s published Kimi K3.1 Pro results. These are reference scores for the original model, not measured scores for the Abliterated variant. Neurion Pro is a separate HydraLabs-reported comparison, retained only for an explicitly matching benchmark identity. Harnesses, budgets and task sets can differ. Neurion Flash is not included. Missing results remain —, never zero.

Max reasoning, temperature 1.0 and top-p 0.95 are the source defaults. Comparative Claude and GPT columns include fallback. The source card contains benchmark-specific protocols, task subsets and tool settings.

Composite ZeroBench avg@5 / pass@5 values remain unchanged in the table and use separate plots. Elo scores, lower-is-better results and text-only asterisks retain their original meaning.

HydraLabs reports an approximately 2% aggregate benchmark decrease for the Abliterated variant. This is a separate internal estimate, not an adjustment to any official cell; raw runs and the aggregation method have not been published.

Official Kimi K3.1 Pro model card

Kimi K3.1 Pro technical report

Source checked: .

A few things
you might be wondering.

What is Neurion?

Neurion is the HydraLabs desktop workspace for conversations, coding, code review and authorized security work. Chat, Code, BugBot and CyberBot share one application, with tools and permissions selected for the task.

Is Ultra a separate model?

No. Ultra organizes complex work into planning, focused assignments and verification. It uses the model selected for the task. Model choice, effort, tool permissions and the task's usage limits still apply.

How are BugBot and CyberBot different?

BugBot reviews project code and changes, explains findings and supports an explicitly requested repair workflow. CyberBot investigates security issues in authorized websites, APIs and codebases. Define the scope before starting and review the evidence and verification results before applying changes.

How do browser and computer tools work?

Enable Browser Use from Plugins when a task needs to interact with a website. Its actions remain subject to the task's permissions and the browser session available to it. Computer Use is not exposed in the current desktop interface. A connected MCP server has its own tools and setup; installing a server does not automatically install a skill.

Does everything run offline?

No. Desktop conversation history and project files are stored on your device. Model requests send the context needed for the task to online services, and connected tools require their own network access. Signing in on another computer does not transfer your local conversations.

Where can I get the Windows app?

Open Download on this website and select the available Windows release. The page provides the installer and release information. Use that page for platform availability; a demonstration on a model page is not an installer.

Try HydraLabs today

Chat, code, and build with Neurion.

Download for Windows