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Best Open-Weight AI Models

Ranking caveatBenchmarks are directional signals, not universal rankings. Results can shift with prompts, tool use, latency targets, pricing tier, eval contamination, safety filters, context length, and the task mix a real team runs.
How to use this page

This is a noindex-safe comparison workbench built from 12 source-ready Kingy AI model profiles. The order is alphabetical, not a ranking. Use the matrix to narrow candidates, then open the model profiles and official sources before making a buying, engineering, or editorial decision.

This page groups source-ready model profiles that match open-weight access signals. Use it to compare license notes, local/self-hosted feasibility, hardware requirements, official model cards, and benchmark caveats without assuming that open weights mean unrestricted open source.

Open this candidate set in the AI Model Intelligence Hub

Comparison Dimensions

These are the checks Kingy AI uses to make the page useful without turning incomplete or fast-changing model data into unsupported rankings.

  • Open-weight and open-source status are separate checks
  • License notes and official model-card links
  • Local/self-hosted availability and hardware requirements
  • Pricing, API availability, and hosted access paths when relevant

Candidate Comparison Matrix

This matrix compares stored profile signals. It does not score, rank, or crown a winner.

Model Provider / Family Why compare it here Access signals Trust signals Source trail
Mistral Medium 3.5 Mistral AI
Mistral 		The official model card labels version 26.04 Modified MIT/open weights. Commercial API terms and the model license still govern the selected access path; do not represent AI output as human-authored.
  • API: Yes
  • Web: Unknown / needs verification
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-07-28
  • Verification: Source-verified
  • Sources: 4 links
gpt-oss-20b OpenAI
gpt-oss 		Commercial/API terms apply unless the linked official source states otherwise.
  • API: No
  • Web: No
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 4 links
gpt-oss-120b OpenAI
gpt-oss 		OpenAI model card describes the gpt-oss models as available under Apache 2.0 plus usage policy terms.
  • API: No
  • Web: No
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 4 links
Llama-3.1-Nemotron-Nano-8B-v1 NVIDIA
Nemotron 		Verify NVIDIA and Llama community license terms.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 1 link
Llama-3.3-Nemotron-Super-49B-v1.5 NVIDIA
Nemotron 		Verify NVIDIA and Llama community license terms.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 2 links
Ministral 3 3B Mistral AI
Ministral 		Verify exact model-card license before redistribution or commercial deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 2 links
Ministral 3 8B Mistral AI
Ministral 		Verify exact model-card license before redistribution or commercial deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 2 links
Ministral 3 14B Mistral AI
Ministral 		Verify exact model-card license before redistribution or commercial deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 2 links
NVIDIA Nemotron 3 Super 120B-A12B NVIDIA
Nemotron 		Verify NVIDIA model-card and Open Model License terms before deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 2 links
Phi-4 Microsoft
Phi 		Verify the Hugging Face model card license and acceptable-use terms before commercial use.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 1 link
Phi-4-mini-instruct Microsoft
Phi 		Verify model-card license terms before commercial deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 1 link
Phi-4-mini-reasoning Microsoft
Phi 		Verify model-card license terms before commercial deployment.
  • API: Yes
  • Web: Yes
  • Local: Yes
  • Open weights: Yes
  • Last verified: 2026-06-24
  • Verification: Source-verified
  • Sources: 1 link
Image, Multimodal, Text

Mistral Medium 3.5

Mistral Medium 3.5 is listed by Mistral as a frontier-class multimodal model optimized for agentic and coding use cases.

API: Yes Open weights: Yes Local: Yes
Provider
Mistral AI
Context
256K tokens
Last verified
2026-07-28
View model
Text

gpt-oss-20b

gpt-oss-20b is OpenAI's medium-sized open-weight gpt-oss model for low-latency, local, or specialized use cases.

API: No Open weights: Yes Local: Yes
Provider
OpenAI
Context
Unknown
Last verified
2026-06-24
View model
Text

gpt-oss-120b

gpt-oss-120b is OpenAI's largest open-weight gpt-oss reasoning model, described by OpenAI as fitting into a single H100 GPU.

API: No Open weights: Yes Local: Yes
Provider
OpenAI
Context
Unknown
Last verified
2026-06-24
View model
Text

Llama-3.1-Nemotron-Nano-8B-v1

Llama-3.1-Nemotron-Nano-8B-v1 is an NVIDIA compact open model that fits on a single RTX GPU and supports 128K context.

API: Yes Open weights: Yes Local: Yes
Provider
NVIDIA
Context
128K tokens
Last verified
2026-06-24
View model
Text

Llama-3.3-Nemotron-Super-49B-v1.5

Llama-3.3-Nemotron-Super-49B-v1.5 is an NVIDIA reasoning model derived from Meta Llama 3.3 and tuned for RAG and tool calling.

API: Yes Open weights: Yes Local: Yes
Provider
NVIDIA
Context
128K tokens
Last verified
2026-06-24
View model
Text

Ministral 3 3B

Ministral 3 3B is the smallest listed Ministral 3 variant for compact Mistral deployments.

API: Yes Open weights: Yes Local: Yes
Provider
Mistral AI
Context
256k tokens
Last verified
2026-06-24
View model
Text

Ministral 3 8B

Ministral 3 8B is a compact Mistral model variant in the Ministral 3 family.

API: Yes Open weights: Yes Local: Yes
Provider
Mistral AI
Context
256k tokens
Last verified
2026-06-24
View model
Text

Ministral 3 14B

Ministral 3 14B is a Mistral small-model variant listed with the Ministral 3 family in official documentation.

API: Yes Open weights: Yes Local: Yes
Provider
Mistral AI
Context
256k tokens
Last verified
2026-06-24
View model
Text

NVIDIA Nemotron 3 Super 120B-A12B

NVIDIA Nemotron 3 Super 120B-A12B is part of NVIDIA's Nemotron open-model family for agentic AI and reasoning workflows.

API: Yes Open weights: Yes Local: Yes
Provider
NVIDIA
Context
Unknown
Last verified
2026-06-24
View model
Text

Phi-4

Phi-4 is a Microsoft Research open model carded on Hugging Face for high-quality reasoning-focused tasks.

API: Yes Open weights: Yes Local: Yes
Provider
Microsoft
Context
Unknown
Last verified
2026-06-24
View model
Text

Phi-4-mini-instruct

Phi-4-mini-instruct is a lightweight Microsoft open model in the Phi-4 family with 128K context listed on its model card.

API: Yes Open weights: Yes Local: Yes
Provider
Microsoft
Context
128K tokens
Last verified
2026-06-24
View model
Text

Phi-4-mini-reasoning

Phi-4-mini-reasoning is a lightweight Microsoft open model for advanced math reasoning in the Phi-4 family.

API: Yes Open weights: Yes Local: Yes
Provider
Microsoft
Context
128K tokens
Last verified
2026-06-24
View model

Next Research Paths

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