Twain vs Lyne.ai 2026: Pricing, Features, Which to Pick

Twain and Lyne.ai both promise AI-personalized cold email at scale, but they solve different problems. Twain runs real-time prospect research across the web and writes signal-based multi-channel outreach, starting free for up to 250 contacts, per Twain's pricing page. Lyne.ai focuses narrowly on personalized intro lines, priced from $0.25 per lyne or $120 a month for up to 2,000 emails, per Lyne.ai's pricing page.

Twain vs Lyne.ai at a glance

Axis	Twain	Lyne.ai
Pricing	Free up to 250 contacts; paid usage is a per-lead credit system, no flat published rate	Free pay-as-you-go at $0.25/lyne; Custom plan $120/month for 2,000 emails; LinkedIn Scraper add-on $39/month
Core capability	Web and CRM research plus lead qualification, then multi-channel copy	AI-generated personalized intro lines at high volume
Additional features	Adaptive persona matching, account/contact qualification, MCP support for Claude Code	LinkedIn Scraper product, Enrich API, "No-Touch" lynes needing no manual review
Integrations	Native to Clay, HubSpot, Salesforce; API-first, works with Claude and Gemini	Included on paid plans, individual tools not named on the pricing page
Best-fit team size	Multi-channel, research-heavy outbound teams with a technical owner	High-volume senders bolting intro lines onto an existing sequence

Twain wins on breadth: research, qualification, and multi-channel copy in one agent. Lyne.ai wins on unit economics for one job, writing a first line and getting out of the way.

How does Twain's pricing work in 2026?

Twain runs on a credit system: one credit per lead for research or messaging, with a free tier covering up to 250 contacts, per Twain's pricing page. Paid pricing scales down per lead at higher volumes, but Twain doesn't publish flat dollar tiers the way most SaaS pages do.

That's the biggest practical difference from Lyne.ai. You can start free and test Twain on a real list before anyone asks for a card. Budgeting for scale means running the numbers yourself, since there's no rate card past the free tier, per Twain's pricing page.

What does Lyne.ai cost in 2026?

Lyne.ai is $0.25 per personalized line on its free, pay-as-you-go plan, or $120/month on the Custom plan for up to 2,000 emails, per Lyne.ai's pricing page. A separate LinkedIn Scraper add-on runs $39/month. Credits roll over and don't expire.

Do the math on Custom: $120 for 2,000 emails works out to $0.06 per email, cheaper than the $0.25-per-line rate once you're sending in volume. Under 2,000 sends a month, the free pay-as-you-go tier is the better deal since there's no monthly floor.

Twain vs Lyne.ai: what each tool actually does

Twain is a research agent first and a copywriter second. It pulls buying signals from the web and CRM data, qualifies the lead against your ICP, then writes email, LinkedIn, and call scripts off what it found. Lyne.ai skips the research framing and goes straight to output, generating intro lines from an email list or LinkedIn profile as input.

That's the real fork. If your list is already well targeted and you just need better opening lines at volume, Lyne.ai processes up to 1,000 intro lines an hour and claims 95-99% are usable without editing, per Lyne.ai's product page. If your targeting is the weak link, Twain's qualification layer does work Lyne.ai doesn't attempt.

Twain connects natively to Clay, HubSpot, and Salesforce and is built API-first, per Twain's pricing page, useful when research output needs to land in a CRM record. Lyne.ai lists "all integrations included" on paid plans without naming specific tools, per Lyne.ai's pricing page.

Which one should you actually use?

Pick Lyne.ai if your bottleneck is genuinely the first line and your list is already qualified. Pick Twain if you're still figuring out who to target and want research built in instead of stitched on with Clay.

Most teams overbuy here. Paying for a full research agent when the real problem is generic opening lines wastes budget. Running Lyne.ai on a badly targeted list just personalizes junk faster. Match the tool to the actual bottleneck, not the flashier demo.

Frequently asked questions

Is Twain free to use?
Yes. Twain's free tier runs on up to 250 contacts before you need a paid plan, per Twain's pricing page. Paid usage is credit-based rather than a flat monthly fee.

How much does Lyne.ai cost per email?
Lyne.ai charges $0.25 per personalized line on its pay-as-you-go plan, or $120/month for up to 2,000 emails on the Custom plan, per Lyne.ai's pricing page.

Does Twain or Lyne.ai integrate with Salesforce and HubSpot?
Twain lists native integrations with Clay, HubSpot, and Salesforce, per Twain's pricing page. Lyne.ai says integrations are included on paid plans but doesn't name specific tools on its pricing page.

Which tool is cheaper for high-volume cold email?
Over 2,000 emails a month, Lyne.ai's Custom plan works out to about $0.06 per email, cheaper than its own pay-as-you-go rate, per Lyne.ai's pricing page. Twain doesn't publish a comparable flat per-email rate.

Neither tool replaces running the actual cold email program. Deliverability, list sourcing, and reply handling still have to happen somewhere. If you'd rather hand that execution layer to a team instead of stitching a personalization tool onto your stack, that's what Modern Inbound's setup plan covers.

By Rishabh Ambasta, Founder, Modern Inbound.