7 Best Oxygen Agent Alternatives for B2B GTM Teams in 2026
By Kushal Magar · October 28, 2026 · 14 min read
Key Takeaway
The best Oxygen Agent alternatives depend on which layer you want to replace. SyncGTM is the pick for the data and signals layer: waterfall-verified emails, mobile numbers, and job-change, hiring, and funding signals, pushed into Instantly, Smartlead, or HeyReach. Amplemarket is the closest all-in-one swap with AI agents and a dialer. Unify is best for signal-triggered plays. Apollo is the budget database plus sequencer. lemlist is the strongest pure multichannel sequencer. Persana suits teams that want AI agents over enrichment tables, and Artisan suits teams that want a fully autonomous AI BDR.
Oxygen Agent alternatives are tools that cover some or all of what OXYGEN does: AI agents that research accounts, enrich contacts, and run email and LinkedIn outreach with a CRM attached. OXYGEN bundles all of that into one credit-based workspace.
Bundles are great until one piece falls short. This guide ranks seven alternatives by the layer they replace, so you can swap the part that hurts and keep the rest.
Quick note: this is about OXYGEN at oxygen-agent.com, the agentic GTM platform. It is not Oxygen Builder, the WordPress page builder.
TL;DR
- SyncGTM: best for the data and signals layer. Waterfall emails, mobiles, and buying signals for your reps, sequencer, or AI agent via MCP. From $49/mo.
- Amplemarket: closest all-in-one swap. AI agents (Duo), data, sequences, and a parallel dialer. From $600/mo.
- Unify: best for signal-triggered plays. Web visits, job changes, and hiring kick off sequences. Free plan, then $20/seat.
- Apollo.io: best budget database plus sequencer. Free plan, paid from $49/user/mo.
- lemlist: best pure multichannel sequencer. Email, LinkedIn, calls, and WhatsApp from $109/mo.
- Persana AI: best for AI agents over enrichment tables. Free tier, Starter $68/mo annual.
- Artisan: best for a hands-off AI BDR. Custom pricing.
What Oxygen Agent Does and Costs
OXYGEN is an agentic revenue platform for B2B GTM teams. Its homepage calls it a GTM operating system that centralises your CRM, outbound, and content workflows.
OXYGEN starts every campaign from a chat prompt, then hands work to agents, tables, and sequences.
The product is built from four primitives: Tables, Sequences, Workflows, and a CRM. Agents sit on top, such as a Campaign Optimizer that rewrites weak sequence steps and a Sales Agent that drafts replies.
Here is what we found on oxygen-agent.com and its pricing page, checked October 28, 2026:
- Channels: email, LinkedIn, WhatsApp, X, and phone sequences, plus content scheduling.
- Data: list building via sources like Apollo and Sales Navigator, then an email waterfall (for example Apollo, then Prospeo, then Hunter). OXYGEN lists averages of about $0.085 per email found and $0.99 per mobile found.
- Agents and access: a built-in workspace agent, plus CLI and MCP access for Claude Code, Codex, and Cursor.
- Approvals: chats default to Auto-approve within credit caps. An Ask for approval mode holds sends, sequence starts, and larger paid steps.
- CRM: built-in CRM. HubSpot syncs both ways, Attio receives updates, Pipedrive can be imported, and there is no Salesforce sync.
- Pricing: free plan with 250 one-time credits. Paid plans run $49, $99, $199, $499, $999, and $1,999 a month, at 100 credits per $1. The homepage "50% off first month" deal is a time-limited promo, not list price.
- Sending add-ons: $34/mo per LinkedIn account, $1/mo per connected mailbox, $4/mo per managed inbox, and $12.50/yr per sending domain.
For a full breakdown of agents, credits, and limits, read our Oxygen Agent review.
Why Look for Oxygen Agent Alternatives
OXYGEN is cheap to start and ambitious in scope. Teams usually look elsewhere for one of five reasons:
- No Salesforce sync. OXYGEN's own FAQ says so. If Salesforce is your system of record, that is a blocker today.
- All-in-one means all-in. The value comes from replacing your CRM, sequencer, and data tools at once. Teams happy with their sequencer or CRM pay for overlap.
- Credit math gets busy. AI runs, lookups, mailboxes, LinkedIn seats, and domains all draw on one balance. Three LinkedIn senders alone add $102/mo before any outreach.
- Auto-approve by default. Agents can send and spend within caps unless you switch to Ask for approval. Cautious teams want approvals on from day one.
- It is young. OXYGEN GTM Inc. shows a 2026 copyright, and we found few independent reviews. Most proof on the homepage is customer testimonial.
The tools below each replace one or more of those layers. We grouped them by job: data and signals, all-in-one platforms, sequencers, and autonomous AI SDRs. For the wider category, see our best AI SDR tools roundup.
Prices and features come from each vendor's own site, checked October 28, 2026. We did not run reply-rate or data-accuracy benchmarks, so vendor claims are labelled as claims.
1. SyncGTM
SyncGTM — people and company search, waterfall enrichment, and buying signals for reps, sequencers, and AI agents.
SyncGTM is a B2B data and signals platform. It is ranked first here for one reason: data quality is the layer that decides whether any agent's outreach lands.
It is not a like-for-like OXYGEN replacement. SyncGTM does not run sequences, so you pair it with a sender. What it does is make the leads going into that sender better.
Find work email tries several providers in turn and returns one answer. Verify email checks deliverability before a lead reaches Instantly, Smartlead, or HeyReach.
Signals tell you when to reach out. Job change, hiring, funding, and tech stack lookups turn a static list into a timed one.
For agent workflows, the SyncGTM MCP server exposes people search, company search, enrichment, and signals as tools. Our data enrichment MCP guide walks through setup.
Coming from Oxygen
Keep OXYGEN's sequences if they work, or move sending to Instantly or HeyReach. Swap the list-building and waterfall step for SyncGTM and sync results into HubSpot or Salesforce.
Pros
- ✓ Waterfall work email finding across 50+ providers; misses are not billed
- ✓ Signals like job changes, hiring, funding, product launches, and tech stack
- ✓ MCP server so Claude, ChatGPT, or Cursor can search and enrich directly
- ✓ Two-way HubSpot and Salesforce sync on every plan
- ✓ Pushes leads into Instantly, Smartlead, or HeyReach so you keep your sender
Cons
- ✗ Not an all-in-one: it does not send email or LinkedIn messages itself
- ✗ No built-in CRM; it syncs into yours
- ✗ Mobile numbers cost 10 credits each, so phone-heavy runs add up
Best for: Teams that want better contact data and signals behind the sequencer, CRM, or AI agent they already use.
Pricing: Solo $49/mo for 1,000 credits, Growth $99/mo for 3,000, Pro $249/mo for 10,000, and Business $649/mo for 40,000. A work email costs 1 credit, verification 0.2, and people search 0.2 per profile. See SyncGTM pricing.
2. Amplemarket
Amplemarket — B2B data, multichannel sequences, a parallel dialer, and Duo AI agents in one platform.
Amplemarket is an all-in-one sales platform with AI agents, verified B2B data, multichannel sequences, and a parallel dialer. It claims 200M+ verified contacts.
Its AI layer, Duo, mixes CRM context, buying signals, and public research. Modules include Duo Copywriter for first touches, Duo Voice for voice messages, and Duo Inbox for reply drafts.
The operating model is human-in-the-loop. Agents prepare outreach and reps review it, which suits teams that found OXYGEN's auto-approve default too loose.
Coming from Oxygen
You trade OXYGEN's low entry price for a more mature platform with a dialer and per-user credit allowances. Compare more options in our Amplemarket alternatives guide.
Pros
- ✓ Closest all-in-one match: data, sequences, dialer, and AI agents
- ✓ Duo agents draft outreach and reps review before it goes out
- ✓ Intent signals and job-change alerts built in
- ✓ Deliverability tooling such as a domain health center
- ✓ Free trial on all plans, per the pricing page
Cons
- ✗ Startup plan is $600/mo on an annual term, far above OXYGEN's entry
- ✗ Growth and Elite tiers are custom-priced
- ✗ Duo Voice and Duo Inbox are reserved for higher tiers
Best for: Funded sales teams that want one platform with data, a dialer, and AI-assisted outreach, and can commit annually.
Pricing: Startup is $600/mo on an annual term with 2 users and 27,000 contacts. Growth and Elite are custom. Full detail in our Amplemarket review.
3. Unify
Unify — intent signals trigger plays that research, enrich, and sequence prospects.
Unify is an AI-native outbound platform that turns buying signals into automated plays. A chat agent handles prospecting, research, and outreach with your CRM as context.
Plays watch for signals, then enroll the right people in sequences with email, call, and social tasks. Unify says it has powered over $786M in pipeline, a vendor claim we could not verify.
Coming from Oxygen
Unify is the closest match for OXYGEN's agent-plus-sequence model, with stronger signal coverage. Watch the plan gates: the best signal automations sit on Business.
Pros
- ✓ Signals like web visits, job changes, funding, hiring, and tech changes trigger plays
- ✓ 1.1B+ people and 65M+ companies from 40+ sources (vendor claim)
- ✓ Multi-vendor email and phone waterfall
- ✓ Free plan for up to 3 seats; 14-day Pro trial with no card
Cons
- ✗ Read-write HubSpot and Salesforce sync only on the custom Business plan
- ✗ Website intent and signal-triggered automations are Business-only
- ✗ Per-seat pricing grows with team size
Best for: Teams that want outbound fired by real buying signals rather than static lists.
Pricing: Free for up to 3 seats. Base $20/seat/mo (800 credits per seat), Pro $60/seat/mo (2,400 credits per seat), Business custom. See our Unify review.
4. Apollo.io
Apollo.io — a large B2B database with sequences, a dialer, and CRM integrations.
Apollo.io is a B2B database and sales engagement platform. It pairs a searchable contact database with email sequences, calls, and LinkedIn tasks.
It is less agentic than OXYGEN. You get AI features on Professional, but the core workflow is still a rep building lists and running sequences.
Coming from Oxygen
Apollo replaces OXYGEN's data and email sequencing for less money per seat. You lose WhatsApp, X, and content scheduling.
Pros
- ✓ Database, sequences, and dialer in one low-cost tool
- ✓ Free plan with no time limit
- ✓ Integrations with Salesforce, HubSpot, and other CRMs
- ✓ Credits pooled across the team
Cons
- ✗ Single-source database, so coverage gaps show in niche segments
- ✗ Free plan email campaigns only work with Gmail accounts
- ✗ Unused credits expire each billing cycle
Best for: Small teams that want one cheap tool for list building and basic sequences.
Pricing: Free plan available. Apollo's pricing page lists Basic at $49 and Professional at $99 per user per month, with annual discounts; Custom is quote-based. More in our Apollo.io review.
5. lemlist
lemlist — multichannel sequences across email, LinkedIn, calls, SMS, and WhatsApp.
lemlist is a multichannel outreach platform. The Multichannel plan covers email, LinkedIn automation, calls, SMS, and a WhatsApp add-on.
It also ships its own agents and an MCP server, so you can drive campaigns from Claude or another AI client. Its 650M+ lead database covers basic list building.
Coming from Oxygen
lemlist replaces OXYGEN's sequences almost one for one. Pair it with a dedicated data source if your reply rates depend on fresh, verified contacts.
Pros
- ✓ Email, LinkedIn automation, calls, SMS, and WhatsApp in one sequence
- ✓ Unlimited users and email senders on every plan
- ✓ lemAgent, AI agents, and a lemlist MCP and CLI included
- ✓ lemwarm warm-up and deliverability tools on all plans
Cons
- ✗ Enrichment is a $20/mo add-on for 2,000 credits
- ✗ Buying intent signals are a separate $29/mo add-on
- ✗ No built-in CRM
Best for: Teams whose main OXYGEN use is multichannel sequencing, especially LinkedIn plus email.
Pricing: Email $69/mo ($55 annual) and Multichannel $109/mo ($87 annual). Enterprise is custom. See our lemlist review.
6. Persana AI
Persana AI — enrichment tables, waterfalls, signals, and AI agents for prospecting.
Persana AI is a prospecting platform built on enrichment tables and AI agents. Credits fund access to 100+ data sources, web scraping, and AI research.
Its agents include an autopilot agent, a research agent, and a full-service AI SDR offering. An AI Sequencer covers email outreach.
Coming from Oxygen
Persana feels the most familiar if you build in OXYGEN Tables. Expect to keep a separate sender for LinkedIn-heavy sequences.
Pros
- ✓ Tables with action columns, much like OXYGEN's Tables
- ✓ Email and phone waterfall across 100+ data sources
- ✓ Signals and intent triggers plus several AI agent types
- ✓ Salesforce and HubSpot apps, webhooks, and bring-your-own API keys
Cons
- ✗ A phone found costs 10 credits
- ✗ Outreach is thinner than a dedicated sequencer
- ✗ Plan feature mapping is hard to read on the pricing page
Best for: Ops-minded teams that like OXYGEN's table-and-agent model but want more enrichment sources.
Pricing: Free with 50 credits. Starter $68/mo billed annually ($85 monthly, 2,000 credits/mo), Growth $151/mo annual, Pro $400/mo annual, and Unlimited $600/mo annual. See our Persana AI review.
7. Artisan
Artisan — Ava, an autonomous AI BDR that finds leads, writes outreach, and books meetings.
Artisan builds AI employees for GTM teams. Its first, Ava, runs outbound end to end: finding and enriching leads, sending outreach, handling replies, and booking meetings.
Where OXYGEN gives you agents plus building blocks, Artisan gives you one agent that owns the motion. That is simpler, and less flexible.
Coming from Oxygen
Pick Artisan if you used OXYGEN mostly on autopilot and want a managed AI BDR. For a rival in the same category, see our 11x review.
Pros
- ✓ Fully autonomous AI BDR from lead discovery to booked meeting
- ✓ 250M+ contact database (vendor claim) with intent data
- ✓ Human-in-the-loop controls: approvals, tone and CTA locks, escalation rules
- ✓ Enterprise security: SOC 2 Type II, SSO/SAML, audit logs
Cons
- ✗ No public prices; a demo is required
- ✗ Less hands-on control than building your own plays
- ✗ Outreach is email-first, with a dialer
Best for: Teams that want to hand outbound to an AI BDR rather than build workflows themselves.
Pricing: Credit-based plans scoped to lead volume, mailboxes, and dialer seats; prices by quote. Read our Artisan review.
Oxygen Agent Alternatives Compared
Here is how the seven Oxygen Agent alternatives stack up against OXYGEN itself.
| Tool | Type | Channels | Data and enrichment | CRM | Starting price |
|---|---|---|---|---|---|
| OXYGEN (baseline) | All-in-one agentic GTM platform | Email, LinkedIn, WhatsApp, X, phone, content scheduling | Provider waterfall (pay per value found) | Built-in CRM; HubSpot two-way, Attio, Pipedrive import; no Salesforce | Free (250 credits); paid from $49/mo |
| SyncGTM | Data + signals layer with MCP | None natively; pushes to Instantly, Smartlead, HeyReach | Waterfall email across 50+ providers, mobiles, signals | HubSpot and Salesforce two-way on all plans | From $49/mo for 1,000 credits |
| Amplemarket | All-in-one sales platform with AI agents | Email, phone (parallel dialer), social | 200M+ contacts (vendor claim), job-change alerts | CRM sync (check integrations page per CRM) | Startup $600/mo (annual, 2 users) |
| Unify | Signal-driven outbound platform | Email, calls, social tasks | 1.1B+ people, 40+ sources, email + phone waterfall | HubSpot, Salesforce (read-write on Business) | Free; Base $20/seat/mo; Pro $60/seat/mo |
| Apollo.io | Database + sales engagement | Email, calls, LinkedIn tasks | Own B2B database | Salesforce, HubSpot and others | Free; Basic $49, Professional $99 per user/mo |
| lemlist | Multichannel sequencer with AI agents | Email, LinkedIn, calls, SMS, WhatsApp (add-on) | 650M+ lead database; enrichment add-on | CRM integrations and API | Email $69/mo; Multichannel $109/mo |
| Persana AI | AI agents + enrichment tables | Email sequencing, AI SDR | 100+ data sources, email and phone waterfall | Salesforce and HubSpot apps, webhooks | Free (50 credits); Starter $68/mo annual |
| Artisan | Autonomous AI BDR (Ava) | Email, dialer | 250M+ contacts (vendor claim), intent data | CRM integration (demo to confirm) | Custom, demo required |
Prices from each vendor's pricing page on October 28, 2026. Database sizes are vendor claims.
When Oxygen Is Still the Right Call
OXYGEN is a fair choice in a few cases. Stay if:
- You are a small team on HubSpot, Attio, or no CRM, and want one bill instead of five tools.
- You need WhatsApp, X, and content scheduling next to email and LinkedIn.
- You want CLI and MCP access to the same workspace your reps use.
- A $49/mo entry with pay-per-found enrichment fits your budget better than per-seat plans.
How to Choose
Start with the layer that is failing, not the tool with the longest feature list.
- "Our leads are thin or stale." Fix data first with SyncGTM. Compare providers in our waterfall contact providers guide.
- "We need Salesforce and a dialer." Amplemarket or Apollo.
- "We want outreach timed to buying signals." Unify, or SyncGTM signals feeding your sequencer. See our buying intent data tools roundup.
- "We mostly need LinkedIn plus email sequences." lemlist.
- "We want AI to run outbound for us." Artisan, or compare agent options in our AI agents for outbound guide.
Whatever you pick, keep a human approval step on new campaigns. Google's email sender guidelines penalise high spam rates, and an over-eager agent can burn a domain fast. If your agents use tools through the Model Context Protocol, check which tools can spend credits or send messages before you connect them.
Final Verdict
OXYGEN is a credible all-in-one for small B2B teams, but no Salesforce sync and a young track record push many teams to look around. The right Oxygen Agent alternative depends on the layer you are replacing.
For data and signals, SyncGTM is the pick: waterfall-verified contacts and timing signals feeding the sequencer or AI agent you already run. For a single platform, Amplemarket is the most complete swap and Unify the best signal-led one.
Budget teams should start on Apollo, LinkedIn-heavy teams on lemlist, table builders on Persana, and teams that want outbound off their plate on Artisan. SyncGTM plans start at $49/mo.