Speeki provides limited and reasonable assurance for sustainability reports.


Speeki provides assurance for your sustainability report according to GRI, CSRD, ESRS and IFRS (S1 and S2)
Speeki is an independent assurance service provide (IASP) for sustainability reporting. We provide assurance of sustainability reports according to all available standards.
The Speeki audit team has considerable experience on the diverse topics of ESG and sustainability. Combined with global knowledge of the reporting standards, our Speeki Guardian™ solutions provide reliable assurance for your sustainability reports.
Speeki Guardian™ offers fixed-price assurance for your annual sustainability reports
Speeki is an impartial and independent auditor and assurance provider.
Speeki follows the International Standard on Sustainability Assurance (ISSA) 5000 – General Requirements for Sustainability Assurance Engagements – as the guiding framework for all Speeki Guardian™ engagements.
Speeki Guardian™ projects are only undertaken when our strict guidelines on conflicts and independence are met. Simply put, we don’t provide assurance for anything we were involved in building.
Speeki has expert content knowledge across all areas in ESG & sustainability.
Speeki has deep expertise across all areas of ESG and sustainability – going beyond environmental and climate change reporting.
We also have expertise in the reporting standards, having built our own Speeki Platform where reporting is a key feature.
Our auditing expertise supports clients with on-site, off-site and hybrid audits that make sense depending on the situation.
Audit expertise from 15+ years of ISO auditing and certification
With over 15 years of experience in auditing and certification, we are a leading provider of ISO certifications in key ESG areas.
Our auditors, approach, methodology and technology support are unmatched. With expert knowledge and a business-focused approach, we make the process easier.
Global. Any country. Any language. Fixed price.
Speeki Guardian™ is delivered globally at a fixed, transparent price, subject to country-specific rules on IASPs providing assurance.
With scalable resources, we have the people and technology to deliver Speeki Guardian™ solutions across any or all parts of your ESG programmes.

How is Speeki Guardian™ different from a typical Big 4 audit firm?
First, we are ‘conflict-free,’ eliminating significant risk and complexity in any engagement. We don’t provide consulting or carry the structural complexities of the Big 4.
Speeki Guardian™ is delivered by senior assurance leaders who are global experts in ESG and sustainability. We don’t use junior staff or fresh graduates. We don’t charge by the hour or prioritise staff utilisation.
We use the Speeki Platform to power our Speeki Guardian™ products, ensuring efficiency, AI-driven insights and reduced time and complexity in every project.
Speeki Guardian™ assurance for your CSRD, ESRS, GRI or IFRS sustainability reports offers three key benefits
Fixed price
Speeki Guardian™ is offered at a fixed price for a three-year assignment.
We invoice quarterly as milestones are met in the annual project delivery, but pricing remains fixed for three years.
Adjustments are only made for significant business changes – providing certainty you can rely on.
Not focused on year-end
No one wants a last-minute audit at year-end, adding pressure to financial and non-financial reporting.
We deliver throughout the year following a structured delivery plan, fully managed on our side.
Our approach ensures we never become a bottleneck in your regulatory requirements or rush to meet deadlines.
Focused on improvement
Beyond assurance and issuing our opinion, Speeki Guardian™ provides additional value.
It includes a report identifying areas for improvement and quarterly presentations to management and your Board – all included in our fee.
Key features of Speeki Guardian™ for CSRD, ESRS, GRI and IFRS assurance
A three-year commitment of trust
Speeki Guardian™ is a three-year engagement delivered quarterly. We partner with you in sustainability report assurance, supporting your sustainability initiatives for the benefit of your stakeholders.
Project management throughout the assurance process
We assign a dedicated team to guide you step by step through the assurance process with Speeki Guardian™. Our project management team ensures clarity on timing and resource requirements.
Targeted preparatory training
We provide training on preparedness and the assurance process for all Speeki Guardian™ clients. Included in our fees, this supports companies new to sustainability report assurance and is especially valuable for boards and management teams.
Practical guidance for a dynamic reporting system
We help you implement a systematic approach to assurance. As part of a Speeki Guardian™ project, we assess your annual sustainability reporting process and the system supporting it. Our goal is to make assurance seamless, giving you confidence and clarity.
Useful reporting for continual improvement
Speeki Guardian™ provides a detailed report with actionable findings to support the continual improvement of your sustainability reporting system. While we can’t fix it for you, we identify areas of nonconformity and suggest opportunities for improvement.
We combine technology and AI with expert knowledge
While others rely on junior graduates for audits, we enhance the assurance process with Nicole™ – our AI-driven ESG and Sustainability Auditor – and the Speeki Platform, making it faster, more efficient and less dependent on human input.
Your sustainability report assurance provider should be a trusted advisor and partner.
Speeki is committed to delivering excellence in sustainability reporting assurance in line with CSRD, ESRS, GRI, and IFRS S1 and S2. To achieve this, we prioritise four key principles:
- Expertise in ESG and sustainability
- Professionalism in assurance practices
- Impartiality, independence and integrity
- Transparency in methodology and processes
(business-focused and risk-based)
Scott Lane, President and General Manager, Speeki, Paris, 2024.
Experienced, committed and trusted – why choose Speeki?
Speeki stands out by combining deep ESG expertise with extensive assurance experience. Through our subsidiary, Speeki Europe, we are already accredited* to certify against the ISO 37001 Anti-Bribery Management Systems standard. Our years of ISO expertise make us uniquely qualified to provide sustainability reporting assurance through Speeki Guardian™.

Global coverage and expertise
We have significant expertise in sustainability reporting. Our Speeki team has deep experience across all ESG topics covered in your sustainability reports. We have all this capacity in-house and don’t rely on contractors or external consultants.
Business-focused and risk-aware
Sustainability reporting assurance requires significant business knowledge on material topics, IROs and the impact on people and the environment. We take a pragmatic approach, ensuring that assurance aligns with real-world business challenges and regulatory expectations.
Trusted expertise in ESG assurance
With over 15 years of experience in auditing and certification, our team applies internationally recognised standards to sustainability reporting. We combine deep subject-matter expertise with a structured methodology to deliver reliable, high-quality assurance.
*ISO, the International Organisation for Standardisation, is an independent, non-governmental international organisation regrouping 164 national standards bodies such as ANSI in the US or BSI in the UK. These oversee developing international standards through a process of consensus. In 2016, ISO created a Technical Committee, the ISO/TC 309, specifically responsible for developing standards related to the “Governance of Organisations”. (www.iso.org/home.html)
ANAB: ANSI National Accreditation Board is an Accreditation Body based in the United States. (anab.ansi.org/)
COFRAC: Comité Français d’Accréditation is the French Accreditation Body (COFRAC Accreditation N°4-0609. List of locations and scope available at www.cofrac.fr).
We regularly engage all of these roles and many more as part of our engagements
We engage at all levels
Key connections and touch points
