Tabnine vs Codeium (2026): Pricing & Accuracy

Tabnine and Codeium both sell AI code completion, and both have changed shape since they launched. Codeium rebranded as Windsurf and folded its assistant into a broader agentic editor. Tabnine leaned further into privacy-first completion and enterprise deployment. On price, the two start near each other for individuals and diverge sharply once you buy per seat at scale. On accuracy, neither vendor's headline benchmark will settle the argument — the only number that matters is acceptance rate inside your own repository. Trial both before you commit a team budget.

Key facts

Overview

These are not identical products any more. Tabnine is a completion-first assistant that has made data control the centre of its pitch: it can run where your code already lives, including environments with no internet access. Windsurf (the company previously called Codeium) is a completion tool that grew into an agentic development environment, where the assistant can plan, edit across files and run tasks with more autonomy.

The overlap is real, and so is the divergence. If your deciding factor is "can I run this without sending source code to a third party", Tabnine answers it directly. If your deciding factor is "can I get a capable assistant for free and grow into agentic features", Windsurf answers it more often.

What each tool actually is

Tabnine

Tabnine started as an autocomplete engine trained on open-source code and grew into a full assistant with chat, code review and test generation. Its differentiator is deployment flexibility: cloud, private cloud, on-premises and fully air-gapped installs. For a bank, a defence contractor or a hospital system, that flexibility is often the entire purchase decision.

Codeium, now Windsurf

Codeium rebranded to Windsurf, and the free individual tier that made it popular still exists in spirit under the new brand. The editor became the centre of gravity, with an agent that can operate across a codebase rather than only finishing the line you are typing. The trade-off of the rebrand is price and packaging churn — teams that locked in old Codeium terms have had to re-check what they now pay.

Pricing compared

Individual tiers

Both vendors keep a free tier. Tabnine's free tier is deliberately limited to pull you toward a paid plan; Windsurf's free tier is more usable for a solo developer, with paid plans unlocking more capable models and agent runs.

Team and enterprise tiers

This is where the maths actually matters, because cost scales per seat. The bars below are indicative monthly list prices gathered from vendor pages and pricing roundups; contract pricing for enterprises is almost always quoted privately and is usually lower than list at volume.

For a 50-developer team, the difference between a $12 and a $39 per-seat plan is roughly $16,200 a year. That is the number to bring to a procurement conversation, not the individual sticker price.

The hidden costs

1. Seat minimums. Team plans often start at a fixed number of seats; buying five seats at an enterprise rate is rarely possible.
2. Agent usage caps. Windsurf's more capable agent features can be metered or rate-limited, so heavy users may need a higher tier than the headline price suggests.
3. Self-hosting. If you need on-prem or air-gapped deployment, expect an enterprise contract, professional services and your own infrastructure cost on top.
4. Migration churn. Because Windsurf changed names and tiers, budget time to re-verify licence terms, SSO support and data-processing agreements.

Accuracy: how to read the claims

What vendors actually measure

Vendors usually quote completion accuracy on public benchmarks, often derived from Python tasks with a known correct answer. A high score means the model finished a lot of isolated functions correctly. It does not mean the model understands your private codebase, your naming conventions or your framework choices.

Why benchmarks mislead

Benchmarks are static, public and increasingly represented in training data. Improvements of a few percentage points are hard to reproduce on real work and rarely change a developer's day. Treat any single benchmark figure as marketing until you reproduce it locally.

The number that matters

The metric worth tracking is acceptance rate: how often developers keep the suggestion instead of deleting it. Teams that measure this usually find the useful signal is whether suggestions fit their own patterns — variable names, internal libraries, house style. That is why a trial on your repository beats any published score. Set a two-week trial, count accepted suggestions per developer per day, and decide on that.

Head-to-head comparison

Who should choose which

• Choose Tabnine if your code cannot leave your network, if procurement needs on-prem or air-gapped deployment, or if you want a completion tool with minimal packaging surprises.
• Choose Windsurf (Codeium) if you are an individual developer who wants capability without a subscription bill, or a team that wants agentic editing in one tool.
• Run both for two weeks on a real repository if your decision hinges on quality rather than compliance. The trial costs a few hours and saves a year of regret.

Tips

Practical dealvorio.com guidance. These tips do not replace a vendor's own terms or your employer's data policy.

• Always trial on your own codebase; published benchmarks rarely survive contact with real repositories.
• Ask for the renewal price in writing, not the introductory rate, before signing an annual seat deal.
• If you handle regulated data, confirm the deployment option you need before comparing prices — it can eliminate one vendor entirely.
• Count accepted suggestions per developer during the trial; that single metric predicts adoption better than any demo.
• Check whether the free tier is "free forever" or "free until you hit a cap" — the wording changes your real cost.

Verification notes

Checked: each vendor's public pricing pages and 2026 pricing roundups for indicative per-seat figures, and the product descriptions of Tabnine's deployment options and the Codeium-to-Windsurf rebrand.

Deliberately not claimed: specific benchmark scores, exact enterprise contract prices, or a definitive accuracy winner. Per-seat prices shown are indicative list rates and change frequently; enterprise pricing is quote-based and varies by seat count, contract length and region. Accuracy is described qualitatively and framed around acceptance rate because published benchmark figures are not reproducible enough to quote as fact. Confirm current pricing and terms on each vendor's site before buying.

References

1. Tabnine — official pricing and deployment pages. https://www.tabnine.com/
2. Windsurf (formerly Codeium) — official pricing page. https://windsurf.com/
3. Dealvorio — AI Coding Tools cluster pricing roundups (2026). https://dealvorio.com/
4. Vendor release notes and rebrand announcements, 2024–2025
5. Public 2026 AI coding-assistant pricing comparisons (aggregate of vendor pages)

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FAQ

Is Codeium still called Codeium? No. Codeium rebranded to Windsurf. The free individual tier that made it popular carried over under the new name, and pricing was repackaged.

Is Tabnine or Codeium cheaper? For individuals, Windsurf's free tier and low Pro price usually win. For teams that need on-prem or air-gapped deployment, Tabnine is often the only option, and enterprise pricing is quoted privately.

Which is more accurate? Neither is provably more accurate in general use. Published benchmarks are not reproducible enough to decide this, so trial both on your own codebase and measure accepted suggestions.

Can Tabnine really run without internet access? Yes. Air-gapped and on-premises deployment are central to Tabnine's enterprise offering. That is its main differentiator for regulated buyers.

Do I need both? Rarely for a team, often useful during a two-week evaluation. After the trial, pick one and standardise to keep costs and workflow predictable.

Last verified: September 2026. Check current pricing on dealvorio.com before buying.