Adira vs Sirion: Which Contract Platform for India (2026)

Sirion is one of the recognised leaders in enterprise contract lifecycle management, especially strong at large, complex, high-value contracts and supplier relationships. Adira is an India-first AI legal operating system built on Anthropic's Claude. For an India buyer choosing between them in 2026, here is a fair head-to-head: where Sirion is strong, where Adira differs, and a clear verdict for each kind of team. ## Adira and Sirion at a glance Before the detail, here is the short version of how Adira and Sirion differ for an India buyer. - What it is: Adira is an India-first AI legal operating system built on Claude; Sirion is an enterprise CLM leader for complex, high-value contracts.

• AI engine and document model: Adira drafts and edits on a structured clause tree with per-clause risk; Sirion centres on its own core job rather than clause-tree drafting tuned to India.
• India law depth: Adira reasons about Indian corporate law natively; with Sirion India depth is configured or secondary.
• Firm tuning: Adira's Company Persona tunes drafts to your organisation; most rivals rely on templates.
• Pricing: Adira publishes per-seat pricing; Sirion's pricing model is set out below.
• Best fit: read the "Choose Adira if, choose Sirion if" verdict near the end before you decide. ## Where Sirion is strong Sirion is a genuine enterprise CLM leader. It is built for large organisations managing complex, high-value contracts, with deep obligation and performance management, strong AI-driven extraction and analytics over large contract estates, and the governance and integrations that global enterprises require. It is frequently placed among the top enterprise CLM platforms by industry analysts, and it has a strong engineering heritage with substantial India-based teams. For a global enterprise that needs rigorous obligation management and analytics across thousands of contracts and suppliers, Sirion is a powerful and proven choice. ## Where Adira is different Adira takes a different path. It runs on Anthropic's Claude and models every contract as a structured clause tree rather than flat text, which changes what you can do with a document. You can draft a full, execution-ready contract from a nested catalogue and a short brief, in text or by voice, streamed live with no length limit. You can then edit in plain English, for example "shorten the non-compete to 12 months everywhere", and Adira locates the right clauses, edits them precisely and returns a diff, with interlinking and pins that show how clauses depend on each other. Its Company Persona learns from your own documents, directors, preferred terms, risk posture and house style, then injects that into every draft so contracts sound like your organisation and skew terms in your favour. Everything sits in one unified web app that also holds files and cases, a live activity timeline that doubles as version history, notebooks for freeform annotation, embedded e-signing and e-stamping, and compliance tracking, rather than five disconnected tools stitched together. ## India law: the deciding factor for an India buyer For an India buyer this is often the deciding factor. Adira's Document Intelligence Dashboard reads a contract against Indian corporate law and colour-codes each position as favourable, neutral or unfavourable to your company. It surfaces red flags and named compliance items such as the Companies Act, Section 42 and PAS-3 for private placements, SEBI, FEMA and stamp duty, along with vulnerabilities by severity, key dates, obligations, monetary terms and missing clauses, all under a single risk-posture meter. That depth is native to the product, built around Indian corporate law and filings first, not a template layered on top of a global engine. For an Indian company, having a review that already understands a Section 42 private placement, a PAS-3 return or a stamp duty exposure is the difference between generic contract software and a tool that reads the way your own counsel does. Sirion is a global enterprise platform configured per jurisdiction, so India depth is work you scope; with Adira that India reasoning is the default behaviour of the product. ## Pricing and how you buy Adira publishes per-seat pricing openly, which is unusual in this market: the Practice plan is 89 US dollars per seat per month billed annually (109 US dollars billed monthly) with a three-seat minimum, the Firm plan is 179 US dollars per seat per month billed annually (219 US dollars billed monthly) with a five-seat minimum, and Enterprise is custom, with a seven-day free trial. Sirion, like most enterprise CLM leaders, is quote-only, sold through sales with an implementation scope, so pricing is not published and is tied to enterprise scale. A lean India team can read Adira's number and start. ## Data, security and privacy Adira confirms it does not train on your contract corpus. Data is encrypted in transit and at rest with role-based access controls, and the Enterprise plan adds SSO and SAML, audit logs, and data residency and retention controls. Your corpus stays in your control and you decide what is shared. Sirion carries enterprise governance for large regulated buyers; Adira matches the essentials, adds the explicit no-training-on-your-corpus commitment, and states its posture plainly without claiming certifications it has not confirmed. ## Deployment and time to value Sirion is a substantial enterprise deployment, with configuration, integration and change management that buys depth in obligation management and analytics at scale. Adira is a single web app you can start in days, with drafting, intelligence, versioning, activity timeline, notebooks, e-signing and e-stamping, and compliance tracking together, and India-law reasoning out of the box. Adira's Company Command Centre, a single pane showing overall legal health, is on the roadmap and should be treated as roadmap rather than a live feature today. ## What Adira has measured Adira reports its own results from live use. Eighteen law firms already use Adira and rank it highly. On contract review and due diligence, those firms cut the work from 10 to 12 days of manual effort down to under 2 hours, with only 2 to 3 rechecks needed in total on Adira's output. These are Adira's own measured results from those live deployments, not an independent third-party study, and they speak to drafting-and-review speed rather than enterprise obligation analytics. ## Choose Adira if, choose Sirion if Choose Adira if you are an India-centred team that wants AI drafting on a structured clause tree, deep per-clause India-law review, firm-tuned output and transparent per-seat pricing with a fast start. Choose Sirion if you are a global enterprise that needs rigorous obligation and performance management and analytics across very large, complex, high-value contract and supplier estates. The two are not really fighting for the same buyer, which is why an honest comparison names the fit rather than a universal winner. You can see Adira's full feature weave at Adira and its plans at pricing. ## Bottom line For an India buyer in 2026, Sirion is the stronger answer for a global enterprise with complex, high-value contracts and heavy obligation and analytics needs. Adira is the stronger answer for an India-centred team that wants native India-law depth, a clause-tree AI engine and pricing you can read. Match the tool to your scale and your core job.