# Braintrust AIR vs Upwork Comparison
---
## AI Generated Summary
- **G2 reviewers report** that Upwork excels in user satisfaction, with many users appreciating the platform's ability to easily find freelancers based on ratings and rates. This feature significantly saves time during the hiring process, making it a preferred choice for small businesses.
- **Users say** that Braintrust AIR offers a unique advantage in streamlining the onboarding and recruiting process, particularly through its AI conversational video interviews. This feature has been highlighted by HR professionals as a game-changer for efficiently managing large-scale hiring.
- **Reviewers mention** that Upwork's payment system is a strong point, with features like on-hold payments ensuring that clients are protected after project completion. This level of security is a significant factor for many users when choosing a freelance platform.
- **According to verified reviews** , Braintrust AIR's user interface is praised for its clarity and performance, which helps users navigate the platform easily. This positive feedback indicates that the platform is designed with user experience in mind, making it accessible for new users.
- **G2 reviewers highlight** that Upwork's implementation process is quick and intuitive, with many users noting that the initial setup was efficient. This ease of use is a critical factor for small businesses looking to get started without extensive delays.
- **Users report** that while Braintrust AIR provides solid support, particularly in French for Quebec candidates, it may not have the same breadth of resources and community engagement as Upwork, which has a larger user base and more extensive support options.



| | Braintrust AIR | Upwork | 
|---|---|---|
| **Star Rating** | 4.4 out of 5 | 4.5 out of 5 | 
| **Total Reviews** | 793 | 3,200 | 
| **Largest Market Segment** | Small-Business (61.6% of reviews) | Small-Business (95.6% of reviews) | 
| **Entry Level Price** | Contact Us | Free | 

---
## Top Pros & Cons

### Braintrust AIR

Pros:
- Ease of Use (24 reviews)
- Time Efficiency (17 reviews)

Cons:
- Hiring Process (6 reviews)
- Limitations (6 reviews)

### Upwork

Pros:
- Ease of Use (665 reviews)
- Job Opportunities (367 reviews)

Cons:
- Expensive (474 reviews)
- High Fees (454 reviews)

---
## Ratings Comparison
| Rating | Braintrust AIR | Upwork | 
|---|---|---|
  | **Meets Requirements** | 8.6 (79 reviews) | 8.8 (2387 reviews) | 
  | **Ease of Use** | 9.1 (81 reviews) | 8.9 (2438 reviews) | 
  | **Ease of Setup** | 9.2 (65 reviews) | 8.9 (1663 reviews) | 
  | **Ease of Admin** | 9.1 (25 reviews) | 8.8 (655 reviews) | 
  | **Quality of Support** | 8.6 (76 reviews) | 8.2 (2129 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.1 (23 reviews) | 8.7 (663 reviews) | 
  | **Product Direction (% positive)** | 8.7 (80 reviews) | 7.3 (2261 reviews) | 

---
## Pricing

### Braintrust AIR

#### Entry-Level Pricing

Plan: Braintrust AIR

Price: Contact Us

Description: Perfect for businesses of all sizes, Braintrust revolutionizes hiring by eliminating 95% of the time, cost, and effort required to find top talent. With our subscription model, you can secure your hires and save up to 90% on hiring fees.

Key Features:
- AI job description generator
- AI candidate matching
- Async AI interviews & grading

[Browse all 4 editions](https://www.g2.com/products/braintrust-air/pricing)

#### Free Trial

Yes

### Upwork

#### Entry-Level Pricing

Plan: Basic

Price: Free

Description: Hire for occasional, project-based work.

Get started for free.*

Key Features:
- Marketplace access — skilled freelancers across thousands of skills
- Talent profiles — portfolios, ratings, and work history
- Hiring tools — proposals and terms in one place

[Browse all 2 editions](https://www.g2.com/products/upwork/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Candidate Relationship Management

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 9.6/10 | 57 |
| **Upwork** | N/A | N/A |

#### Basics

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Reporting** | 9.4 (6 reviews) | Not enough data | 
| **Interoperability** | 8.3 (5 reviews) | Not enough data | 
| **Performance** | 9.7 (6 reviews) | Not enough data | 

#### Additional Functionality

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Dashboard** | 9.4 (6 reviews) | Not enough data | 
| **Cloud** | 9.2 (6 reviews) | Not enough data | 
| **Mobility** | Feature Not Available | Not enough data | 

#### Content

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Automation** | 10.0 (5 reviews) | Not enough data | 
| **File Sharing** | 8.7 (5 reviews) | Not enough data | 

#### Recruiting and Onboarding

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Sourcing and Candidate Identification** | 8.9 (11 reviews) | Not enough data | 
| **Interview Scheduling** | 8.8 (13 reviews) | Not enough data | 
| **Applicant Tracking** | 9.1 (11 reviews) | Not enough data | 

#### Platform

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Customization ** | Feature Not Available | Not enough data | 
| **Integration APIs** | Not enough data | Not enough data | 
| **Internationalization** | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.7 (5 reviews) | Not enough data | 
| **Performance** | 8.7 (5 reviews) | Not enough data | 
| **Mobility** | Feature Not Available | Not enough data | 
| **Reporting** | 7.5 (6 reviews) | Not enough data | 
| **Dashboards** | 6.9 (6 reviews) | Not enough data | 

### Talent Intelligence

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 9.6/10 | 21 |
| **Upwork** | N/A | N/A |

#### Platform Basics

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Interoperability** | 9.3 (5 reviews) | Not enough data | 
| **Performance** | Not enough data | Not enough data | 
| **Self-service** | Not enough data | Not enough data | 
| **Automation** | 9.7 (5 reviews) | Not enough data | 

#### Platform Data

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Platform Search** | Feature Not Available | Not enough data | 
| **Dashboard** | Not enough data | Not enough data | 
| **Alerts and Notifications** | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | 

#### Platform Functionality

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Dashboard** | 9.7 (5 reviews) | Not enough data | 
| **Talent Management** | Not enough data | Not enough data | 
| **Diversity** | Not enough data | Not enough data | 
| **Add-on** | Not enough data | Not enough data | 
| **Talent Acquisition** | 9.2 (6 reviews) | Not enough data | 
| **Proctoring** | Not enough data | Not enough data | 
| **Assessments** | 10.0 (5 reviews) | Not enough data | 

#### Agentic AI - Talent Intelligence

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Multi-step Planning** | Feature Not Available | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | 

### Recruiting Automation

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 8.5/10 | 61 |
| **Upwork** | N/A | N/A |

#### Platform Functionality

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Sourcing and Candidate Identification** | 8.9 (11 reviews) | Not enough data | 
| **Job Posting** | 6.7 (5 reviews) | Not enough data | 
| **Interview Scheduling** | 8.8 (13 reviews) | Not enough data | 
| **Applicant Tracking** | 9.1 (11 reviews) | Not enough data | 

#### Agentic AI - Recruiting Automation

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 
| **Multi-step Planning** | 8.7 (5 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | 
| **Natural Language Interaction** | 9.4 (6 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | 
| **Decision Making** | 8.0 (5 reviews) | Not enough data | 

#### Platform

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Customization ** | Feature Not Available | Not enough data | 
| **Integration APIs** | Not enough data | Not enough data | 
| **Internationalization** | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.7 (5 reviews) | Not enough data | 
| **Performance** | 8.7 (5 reviews) | Not enough data | 
| **Mobility** | Feature Not Available | Not enough data | 
| **Reporting** | 7.5 (6 reviews) | Not enough data | 
| **Dashboards** | 6.9 (6 reviews) | Not enough data | 

### Freelancer Management Systems

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | N/A | N/A |
| **Upwork** | 8.2/10 | 96 |

#### Platform Basics

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Payment** | Not enough data | 8.7 (68 reviews) | 
| **Project Management** | Not enough data | 7.9 (65 reviews) | 
| **Dashboard** | Not enough data | 8.3 (68 reviews) | 

#### Generative AI

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **AI Text Summarization** | Not enough data | 6.6 (56 reviews) | 

#### Platform Performance

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Interoperability** | Not enough data | 7.1 (58 reviews) | 
| **Performance** | Not enough data | 8.5 (71 reviews) | 
| **Monitoring** | Not enough data | Feature Not Available | 

#### Platform Content

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Contracts** | Not enough data | 8.3 (66 reviews) | 
| **Request Tool** | Not enough data | 7.9 (60 reviews) | 
| **Selection Management** | Not enough data | 8.1 (74 reviews) | 
| **Invoicing Tool** | Not enough data | 8.2 (58 reviews) | 
| **Proposal Tool** | Not enough data | 8.1 (59 reviews) | 

#### Platform Additional Functionality

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Reporting** | Not enough data | 8.1 (60 reviews) | 
| **Mobility** | Not enough data | 8.4 (60 reviews) | 
| **Portal** | Not enough data | 8.2 (59 reviews) | 

### Video Interviewing

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 8.9/10 | 81 |
| **Upwork** | N/A | N/A |

#### Platform Basics

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Reporting** | Not enough data | Not enough data | 
| **Interoperability** | Not enough data | Not enough data | 
| **Performance** | Not enough data | Not enough data | 
| **User, Role, and Access Management** | Not enough data | Not enough data | 

#### Platform Content

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Technology** | 9.4 (6 reviews) | Not enough data | 
| **File Sharing** | Feature Not Available | Not enough data | 
| **Customization** | Not enough data | Not enough data | 

#### Platform Additional Functionality

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Mobility** | Feature Not Available | Not enough data | 
| **Messaging** | Feature Not Available | Not enough data | 
| **Task Management** | Feature Not Available | Not enough data | 
| **Dashboards** | 8.3 (5 reviews) | Not enough data | 

### Job Board

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 8.3/10 | 56 |
| **Upwork** | N/A | N/A |

#### Administration

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Job board creation** | 8.4 (26 reviews) | Not enough data | 
| **Administrator dashboard** | 7.8 (30 reviews) | Not enough data | 
| **Custom pricing** | 8.5 (27 reviews) | Not enough data | 
| **Billing** | 8.2 (29 reviews) | Not enough data | 
| **Search optimization** | 8.3 (27 reviews) | Not enough data | 
| **Multiple job boards** | 8.5 (24 reviews) | Not enough data | 
| **Importing jobs** | 7.7 (27 reviews) | Not enough data | 

#### Employers

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Employer dashboard** | 8.0 (27 reviews) | Not enough data | 
| **Branded profiles** | 8.5 (27 reviews) | Not enough data | 

#### Job seekers

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Alerts** | 8.4 (29 reviews) | Not enough data | 
| **Search** | 8.9 (30 reviews) | Not enough data | 

### Talent Management

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | N/A | N/A |
| **Upwork** | N/A | N/A |

#### Generative AI

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | Not enough data | 

### Recruiting

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | N/A | N/A |
| **Upwork** | N/A | N/A |

#### Generative AI

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | Not enough data | 

### AI Recruiting

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 9.1/10 | 185 |
| **Upwork** | N/A | N/A |

#### AI Core Recruiting    

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Automated Resume Screening** | 9.2 (8 reviews) | Not enough data | 
| **End-to-End AI Recruiting Workflow** | 8.7 (9 reviews) | Not enough data | 
| **Adaptive AI Model Refinement** | 9.7 (6 reviews) | Not enough data | 
| **Human Oversight** | 8.5 (8 reviews) | Not enough data | 

#### AI Interviewing & Assessment

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **AI-Enabled Interviews & Assessments** | 9.1 (19 reviews) | Not enough data | 

#### Job Content Creation

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| ** AI-Generated Job Descriptions ** | 9.5 (7 reviews) | Not enough data | 

#### AI Candidate Interaction & Outreach

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Automated Interview Scheduling** | 9.3 (10 reviews) | Not enough data | 
| **Conversational Chatbots & Virtual Assistants** | 8.8 (13 reviews) | Not enough data | 
| **AI-Driven Outreach & Follow-Ups ** | 9.0 (7 reviews) | Not enough data | 

#### AI Candidate Evaluation & Insights

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Recruiter Decision Support    ** | 9.3 (9 reviews) | Not enough data | 
| **AI-Based Candidate Ranking** | 9.4 (9 reviews) | Not enough data | 
| **AI-Based Candidate Assessment** | 9.2 (10 reviews) | Not enough data | 

### AI Interview Agent

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | N/A | N/A |
| **Upwork** | N/A | N/A |

#### Basic Features - AI Interview Agent

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Communication** | Not enough data | Not enough data | 
| **Format** | Not enough data | Not enough data | 
| **Translation** | Not enough data | Not enough data | 

#### AI Bias Audit - AI Interview Agent

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Bias Scoring** | Not enough data | Not enough data | 
| **PII Info** | Not enough data | Not enough data | 
| **AI Disclosure** | Not enough data | Not enough data | 

#### Transcription - AI Interview Agent

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Scoring Log** | Not enough data | Not enough data | 
| **Audit Log** | Not enough data | Not enough data | 

#### AI Capability - AI Interview Agent

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **AI Hybrid** | Not enough data | Not enough data | 
| **AI Avatar** | Not enough data | Not enough data | 
| **AI-Led** | Not enough data | Not enough data | 

### Freelance Platforms

| Product | Score | Reviews |
|---|---|---|
| **Braintrust AIR** | 8.5/10 | 130 |
| **Upwork** | 8.3/10 | 2107 |

#### Hiring

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **RFP Creator** | 7.9 (21 reviews) | 7.1 (1462 reviews) | 
| **Messaging** | 8.4 (24 reviews) | 8.8 (1898 reviews) | 
| **Freelance Screening** | 9.1 (31 reviews) | 8.5 (1778 reviews) | 
| **Freelance Profiles** | 8.5 (25 reviews) | 8.8 (1885 reviews) | 

#### Project Management

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Calendar** | Feature Not Available | 7.2 (1058 reviews) | 
| **Guidelines and Policies** | 8.0 (22 reviews) | 8.1 (1683 reviews) | 
| **Workflow Builder** | Feature Not Available | 8.5 (24 reviews) | 
| **Digital Asset Management** | Feature Not Available | 7.7 (1589 reviews) | 

#### Payment

| Feature | Braintrust AIR | Upwork | 
|---|---|---|
| **Payment Automation** | 8.3 (25 reviews) | 8.8 (1847 reviews) | 
| **Secure Payments** | 9.2 (27 reviews) | 9.3 (1901 reviews) | 
| **Multi-Currency Payments** | 8.7 (21 reviews) | 8.1 (1470 reviews) | 
| **Multiple Payment Methods** | 8.3 (26 reviews) | 8.5 (1586 reviews) | 

---
## Categories
**Shared Categories (1):** [Freelance Platforms](https://www.g2.com/categories/freelance-platforms)

**Unique to Braintrust AIR (7):** [AI Recruiting Software](https://www.g2.com/categories/ai-recruiting), [Job Board Software](https://www.g2.com/categories/job-board), [Talent Intelligence Software](https://www.g2.com/categories/talent-intelligence), [Candidate Relationship Management Software](https://www.g2.com/categories/candidate-relationship-management), [Recruiting Automation Software](https://www.g2.com/categories/recruiting-automation), [Video Interviewing Software](https://www.g2.com/categories/video-interviewing), [AI Interview Agent Software](https://www.g2.com/categories/ai-interview-agent)

**Unique to Upwork (1):** [Freelancer Management Systems ](https://www.g2.com/categories/freelancer-management-systems)


---
## Reviewer Demographics

### By Company Size

| Segment | Braintrust AIR | Upwork | 
|---|---|---|
| **Small-Business** | 61.6% | 95.6% | 
| **Mid-Market** | 27.7% | 4.2% | 
| **Enterprise** | 10.7% | 0.3% | 

### By Industry

#### Braintrust AIR

- **Information Technology and Services:** 21.0%
- **Computer Software:** 13.6%
- **Marketing and Advertising:** 9.9%
- **Financial Services:** 3.7%
- **Graphic Design:** 3.7%
- **Staffing and Recruiting:** 3.7%
- **Consulting:** 3.7%
- **Program Development:** 2.5%
- **Computer & Network Security:** 2.5%
- **Computer Hardware:** 2.5%
- **Other:** 33.3%

#### Upwork

- **Marketing and Advertising:** 15.1%
- **Information Technology and Services:** 9.4%
- **Computer Software:** 9.1%
- **Writing and Editing:** 6.8%
- **Graphic Design:** 4.9%
- **Consulting:** 3.1%
- **Accounting:** 2.9%
- **Design:** 2.9%
- **Management Consulting:** 1.9%
- **Internet:** 1.8%
- **Other:** 42.1%

---
## Alternatives

### Alternatives to Braintrust AIR

- [Phenom Applied AI](https://www.g2.com/products/phenom-applied-ai/reviews) — 4.3/5 stars (430 reviews)
- [CodeSignal](https://www.g2.com/products/codesignal/reviews) — 4.5/5 stars (1408 reviews)
- [ICIMS](https://www.g2.com/products/icims/reviews) — 4.2/5 stars (989 reviews)
- [Jobvite](https://www.g2.com/products/jobvite/reviews) — 4.0/5 stars (665 reviews)
- [Sense](https://www.g2.com/products/sense-sense/reviews) — 4.5/5 stars (568 reviews)
- [Grayscale](https://www.g2.com/products/paylocity-grayscale/reviews) — 4.5/5 stars (505 reviews)
- [Zoho Recruit](https://www.g2.com/products/zoho-recruit/reviews) — 4.4/5 stars (1843 reviews)
- [SAP SuccessFactors HCM](https://www.g2.com/products/sap-sap-successfactors-hcm/reviews) — 4.1/5 stars (1656 reviews)
- [Hireology](https://www.g2.com/products/hireology/reviews) — 4.5/5 stars (1362 reviews)
- [Paycor](https://www.g2.com/products/paycor/reviews) — 3.9/5 stars (1353 reviews)

### Alternatives to Upwork

- [Fiverr](https://www.g2.com/products/fiverr/reviews) — 4.3/5 stars (462 reviews)
- [Bark.com](https://www.g2.com/products/bark-com/reviews) — 1.6/5 stars (332 reviews)
- [Toptal](https://www.g2.com/products/toptal/reviews) — 4.7/5 stars (270 reviews)
- [Skyword360](https://www.g2.com/products/skyword360/reviews) — 4.3/5 stars (197 reviews)
- [Freelancer.com](https://www.g2.com/products/freelancer-com/reviews) — 4.0/5 stars (179 reviews)
- [CloudDevs.com](https://www.g2.com/products/clouddevs-com/reviews) — 4.9/5 stars (163 reviews)
- [PeoplePerHour.com](https://www.g2.com/products/peopleperhour-com/reviews) — 4.0/5 stars (101 reviews)
- [Guru.com](https://www.g2.com/products/guru-com/reviews) — 3.2/5 stars (20 reviews)
- [Turing.com](https://www.g2.com/products/turing-com/reviews) — 4.3/5 stars (20 reviews)
- [Dribbble](https://www.g2.com/products/balkan-brothers-ltd-dribbble/reviews) — 4.2/5 stars (24 reviews)

---
## Top Discussions

### Braintrust AIR

No discussions available for this product.

### Upwork

- Title: [Is Upwork better or Fiverr?](https://www.g2.com/discussions/upwork-is-upwork-better-or-fiverr) — 3 comments, 4 upvotes
  > **Top comment:** "Upwork"
- Title: [As a new user of Upwork, how can I effectively use its proposal bidding system to increase my chances of winning projects?](https://www.g2.com/discussions/as-a-new-user-of-upwork-how-can-i-effectively-use-its-proposal-bidding-system-to-increase-my-chances-of-winning-projects) — 2 comments, 1 upvote
  > **Top comment:** "Describe your expertise and show some samples. Try to bid first. Deliver projects on time. Be pricing competitive. Then done. You will grow soon."
- Title: [What is Upwork used for?](https://www.g2.com/discussions/what-is-upwork-used-for) — 2 comments, 2 upvotes
  > **Top comment:** "Upwork is a global freelancing platform that connects businesses or individuals (clients) with skilled professionals (freelancers). It’s used for both hiring..."
- Title: [What is Upwork platform?](https://www.g2.com/discussions/what-is-upwork-platform) — 2 comments
  > **Top comment:** "Simple one word will give you option to get business from world clients"
- Title: [How Can I grow more on Upwork?](https://www.g2.com/discussions/how-can-i-grow-more-on-upwork) — 1 comment, 1 upvote
  > **Top comment:** "You can Grow on Upwork by learning more new and advanced skills to offer them for selling purposes and earn more and grow, Because, Upwork is the most..."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/braintrust-air-vs-upwork)