Inworld AI
inworld.ai
Actively hiring
Game Development
Conversational AI
AI Agents
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$110M
3 rounds on record
Latest round
$50M
Venture round · Aug 2023 · 3 yr ago
Team
201-500
employees, estimated range
Hiring now
20
+3 posted in 30 days
Backers
7
Kleiner Perkins, CRV
The money's age
Long since its last round
38 months since the last round · and hiring
Momentum
31/100
hiring for its size, a new city, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Oct 7
First executive search Director, Sales Development - USA
Jun 26, 2025
Launched on Hacker News Show HN: Inworld TTS – high-quality, affordable, and low-latency TTS
Jan 7, 2025
Partnership Inworld AI Partners with NVIDIA and Streamlabs to Unveil the World's First Intelligent Streaming Assistant · Wccftech
Aug 4, 2023
Raised a round Venture round $50M · led by Lightspeed Venture Partners · GamesIndustry.biz
Aug 23, 2022
Raised a round Series A $50M
Apr 28, 2022
Launched Inworld AI Launches Inworld Studio, a Revolutionary Platform that Enables Developers and Creators to Build Intelligent Virtual Characters · businesswire.com
Mar 3, 2022
Raised a round Venture round $10M
2021
Founded
Tractionpublic signals, read monthly
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Aug 2023 | $50M | Lightspeed Venture Partners lead | GamesIndustry.biz |
| Series A | Aug 2022 | $50M | — | businesswire.com |
| Venture round | Mar 2022 | $10M | — | venturebeat.com |
Backed byfrom the funds' portfolios and accelerator catalogs
Kleiner Perkins 
CRV 
First Spark Ventures 
LG Technology Ventures 
Lightspeed Venture Partners 
NTT Docomo Ventures Investors in similar startupsfunds that back the companies most like this one
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How Inworld AI hires
Truth index
C 55/100
Ghost roles
75%
Stale roles
0%
Reposted roles
0%
Inworld AI scores C on the Alion truth index (A is best, E worst), measured over 20 open roles re-checked against its own hiring board: 75% look like ghost listings, 0% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Inworld AI is a company founded in 2021 that builds a runtime for artificial intelligence characters and agents in games and interactive media. Its engine handles dialogue, memory, emotion and safety so studios can drop believable non-player characters into a title without building model infrastructure. The company works with game developers and consumer platforms and has partnered with Microsoft and Nvidia.
News
Introducing the Inworld TTS Open Evaluation Toolkit
An open source framework for reproducible TTS evaluation. Local ASR, explicit normalization, per-sample measurements, and offline reports you can trace back to the audio.
Read more
Report
Building conversational voice agents with Mastra + Inworld Realtime API
@mastra/voice-inworld-realtime collapses STT, LLM, and expressive realtime TTS into one WebSocket, with semantic VAD, barge-in, and tool calling out of the box. Bind the Inworld Realtime API to a Mastra Agent in under 100 lines of TypeScript.
Read more
Report
Cost is the wall in front of consumer AI. We are taking it down.
Consumer AI was priced for the enterprise, and that arithmetic is where good products die. We are cutting the cost of the whole stack in half or more for most developers, across text-to-speech, speech-to-text, the LLM, and compute, and lowering it further
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Report
Realtime voice agents can now see, listen, and engage
Inworld TTS-2 + Stream Vision Agents build AI voice agents that read emotions, respond in real time - sub-200ms latency, 100+ languages, full context.
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Report
Realtime TTS-2: A new frontier voice model that feels as human as it sounds
A new frontier voice model that feels as human as it sounds. Hears the conversation, takes voice direction in plain English, and holds one voice across over 100 languages.
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Report
Beyond Quality: Emotionality and Expressiveness
Standard TTS benchmarks miss emotional depth. Inworld's framework measures arousal and prosodic variation - the metrics that actually predict user engagement.
Read more
Report
Inworld AI (@inworld) on X
Inworld TTS-1.5 releases today. The #1 TTS on Artificial Analysis now offers realtime latency under 250ms and optimized expression and stability for user engagement, and costs half a cent per minute.Some voice models are fast, some are expressive, some ar
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Report
Inworld AI (@inworld_ai) on X
Inworld TTS-1.5 releases today. The #1 TTS on Artificial Analysis now offers realtime latency under 250ms and optimized expression and stability for user engagement, and costs half a cent per minute.Some voice models are fast, some are expressive, some ar
Read more
Report
Inworld TTS-1.5: Upgrading the #1 Ranked TTS Model with Production-Grade Latency, Expression and Stability
TTS-1.5 Max hits P90 under 250ms. Mini under 130ms. 40% fewer word errors, 30% more expressive, 15 languages including Hindi. Built for production scale.
Read more
Report
Talkpal AI scales to 5 million language learners with Realtime TTS
How Talkpal cut TTS costs by 40% while improving retention and free-to-paid conversion
Read more
Report
Show more news
Tech stack
Technologies named in job postings at Inworld AI over the last 12 months, by layer, with the share of postings for each.
Technologies in use
40
Postings analysed
19
Stack modernity
78/100AI adopter
Languages
Python37%
C++26%
Rust26%
Go5%
Frameworks & libraries
CUDA26%
Ray26%
Cloud & platforms
Kubernetes32%
CUDA Toolkit26%
vLLM26%
Azure5%
AI & ML
LLM100%
Claude5%
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Full Inworld AI tech stack
40 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$350k
Typical range
$350k
Open positions
1
1
Jobs
Principal
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Principal | 1 | $350k | $350k |
Highest paying role
Staff / Principal Platform Engineer - USA
$350k
Normalized to USD per year
Growth
Hiring Momentum
70/100
Growing
Open positions
20
3 opened / 2 closed in 30 days
Median time-to-fill
85 days
faster than 16% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Marketing
50% ▼
HR
17% ▼
Sales
17% ▲
Customer Success
17% ▲
Activity Timeline
Added YouTube to stack
Oct 2026
Added Discord to stack
Oct 2026
New location: Serbia
Sep 2026
New location: Germany
Sep 2026
Added Machine Learning to stack
Sep 2026
Added World Models to stack
Sep 2026
Added Tool Use to stack
Sep 2026
Added Reward Modeling to stack
Sep 2026
Added Speculative Decoding to stack
Sep 2026
Added Model Distillation to stack
Sep 2026
Added Realtime API to stack
Sep 2026
Added Edge AI to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
Mountain View
Mountain View
United States
HQ
Inworld AI
11 open roles 6 posted in 90 days 36% engineering 200-500 est. staff $350k Avg Salary
hires for AI/ML, Marketing, Sales
1975 W El Camino Real, Suite 300, Mountain View, 94040
Jobs
≈ $144k – $283k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • Bachelor's Degree • Mountain View
Python
JavaScript
TypeScript
Quantization
LLM
Text-to-Speech
Realtime API
DevOps
WebRTC
WebSockets
Management
n8n
Zapier
Apply
≈ $131k – $317k per year (Estimated) • Remote (Switzerland) • Full-Time • 10+ years exp • PhD
Python
Rust
C++
vLLM
CUDA Toolkit
Quantization
Multimodal AI
Knowledge Distillation
AI Agents
LLM
Ray
CUDA
Speculative Decoding
Model Distillation
DevOps
Kubernetes
Apply
≈ $105k – $195k per year (Estimated) • Remote (United Kingdom) • Full-Time • 10+ years exp • PhD
Python
Rust
C++
vLLM
CUDA Toolkit
Quantization
Multimodal AI
Knowledge Distillation
AI Agents
LLM
Ray
CUDA
Speculative Decoding
Model Distillation
DevOps
Kubernetes
Apply
≈ $61k – $148k per year (Estimated) • Remote (Serbia) • Full-Time • 10+ years exp • PhD
Python
Rust
C++
vLLM
CUDA Toolkit
Quantization
Multimodal AI
Knowledge Distillation
AI Agents
LLM
Ray
CUDA
Speculative Decoding
Model Distillation
DevOps
Kubernetes
Apply
≈ $109k – $209k per year (Estimated) • Remote (Germany) • Full-Time • 10+ years exp • PhD
Python
Rust
C++
vLLM
CUDA Toolkit
Quantization
Multimodal AI
Knowledge Distillation
AI Agents
LLM
Ray
CUDA
Speculative Decoding
Model Distillation
DevOps
Kubernetes
Apply
≈ $182k – $372k per year (Estimated) • Hybrid • Full-Time • 10+ years exp • PhD • Mountain View
Python
Rust
C++
vLLM
CUDA Toolkit
Quantization
Multimodal AI
Knowledge Distillation
AI Agents
LLM
Ray
CUDA
Speculative Decoding
Model Distillation
DevOps
Kubernetes
Apply
≈ $106k – $195k per year (Estimated) • Remote (United Kingdom) • Full-Time • 10+ years exp • PhD
Multimodal AI
Function Calling
AI Agents
NLP
LLM
Tool Use
World Models
Reward Modeling
Apply
≈ $61k – $148k per year (Estimated) • Remote (Serbia) • Full-Time • 10+ years exp • PhD
Multimodal AI
Function Calling
AI Agents
NLP
LLM
Tool Use
World Models
Reward Modeling
Apply
≈ $109k – $209k per year (Estimated) • Remote (Germany) • Full-Time • 10+ years exp • PhD
Multimodal AI
Function Calling
AI Agents
NLP
LLM
Tool Use
World Models
Reward Modeling
Apply
$280k – $350k per year • Hybrid • Full-Time • 8+ years exp • Mountain View
Python
Go
LLM
DevOps
Terraform
Ansible
GCP
Helm
GitHub Actions
Terragrunt
Kustomize
Azure
CI/CD
ArgoCD
Kubernetes
Apply
≈ $132k – $318k per year (Estimated) • Remote (Switzerland) • Full-Time • 10+ years exp • PhD
Multimodal AI
Function Calling
AI Agents
NLP
LLM
Tool Use
World Models
Reward Modeling
Apply
≈ $80k – $164k per year (Estimated) • Remote (Canada) • Full-Time • Vancouver
Python
Go
Rust
C++
MySQL
PostgreSQL
Redis
ClickHouse
Memcached
InfluxDB
AI/ML
Flink
LLM
RAG
Text-to-Speech
Realtime API
DevOps
OpenTelemetry
Apply