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Best Fine-tuning & Training AI Tools

12 tools compared · 2026

12 fine-tuning & training startups tracked, with the largest concentration in US. Total tracked funding: $8.3B.

All (12) By country Top ranked By funding
Tracked
12
Total Raised
$8.3B
Countries
4
Active Deals
0

Top by score

View all 12 →
1 Thinking Machines Lab San Francisco, US $2B
90
2 Lambda San Francisco, US $2.0B
82
3 Nscale London, GB $3.1B
75
4 FriendliAI Redwood City, US $25M
72
5 MatX Mountain View, US $545M
71
6 Lamini Palo Alto, US $25M
69
7 Mobilint Seoul, KR $100M
67
8 Anyscale San Francisco, US $260M
63
9 VESSL AI Seoul, KR $16.8M
61
10 Rapidata — $8.5M
57
11 Refiant AI Cape Town, ZA $5M
57
12 Together AI San Francisco, US $267.5M
56

Funding by year — Fine-tuning & Training

2019 → 2026
$20.6M
’19
$40M
’20
$100M
’21
$267.5M
’24
$5.1B
’25
$2.5B
’26

Top countries

By startup count

Stage breakdown

Latest round type
  • Series C 4
  • Seed 4
  • Series A 2
  • Series E 1
  • Series B 1

Top investors backing Fine-tuning & Training

See all →
Andreessen Horowitz
4 deals
Intel Capital
3 deals
New Enterprise Associates
3 deals
Foundation Capital
2 deals
Salesforce Ventures
2 deals
NVIDIA
2 deals
Ant Financial
1 deal
Addition
1 deal
11.2 Capital
1 deal
BlueYard
1 deal
Harpoon Ventures
1 deal
Marvell Technology
1 deal

Recent rounds in Fine-tuning & Training

All rounds →
Date Startup Round Amount
Apr 2026 Refiant AI Seed $5M
Mar 2026 Nscale Series C $2B
Feb 2026 MatX Series B $500M
Nov 2025 Lambda Series E $1.5B
Sep 2025 Nscale Series B $1.1B
Jul 2025 Thinking Machines Lab Seed $2B
Apr 2025 Mobilint Series C $46.4M
Feb 2025 Lambda Series D $480M

All Fine-tuning & Training startups

Page 1

Thinking Machines Lab

US est. 2025

Frontier AI research lab building customizable, multimodal models

Raised
$2B
Stage
Seed
90

Lambda

Verified
US est. 2012

GPU cloud for AI teams

Raised
$2.0B
Stage
S-E
82

Nscale

Verified
GB est. 2024

European sovereign AI infrastructure

Raised
$3.1B
Stage
S-C
75

FriendliAI

US est. 2021

Fast, cost-efficient generative AI inference for any model

Raised
$25M
Stage
Seed
72

MatX

US est. 2024

Chips built from the ground up for frontier large language models

Raised
$545M
Stage
S-B
71

Lamini

US est. 2022

Enterprise platform for tuning and running custom LLMs

Raised
$25M
Stage
S-A
69

Mobilint

KR est. 2019

High-performance edge AI NPUs that run LLMs on-device

Raised
$100M
Stage
S-C
67

Anyscale

US est. 2019

Production-scale AI infrastructure powered by Ray for distributed training, data curation, and batch inference.

Raised
$260M
Stage
S-C
63

VESSL AI

KR est. 2020

MLOps platform that cuts GPU costs by up to 80%

Raised
$16.8M
Stage
S-A
61

Refiant AI

ZA est. 2025

Compressing AI models to cut cost, energy, and run at the edge

Raised
$5M
Stage
Seed
57

Rapidata

est. 2023
Raised
$8.5M
Stage
Seed
57

Together AI

Verified
US est. 2022

The open AI cloud

Raised
$267.5M
Stage
S-C
56