One of these tools was sold in July and its extension has not shipped since January. We put both on the same repository for five days, watched the network, and pulled the plug on day four.
by GitHub · Pro $10/mo, 1,500 AI credits
Winneracquired by Tricentis, July 2026 · (Legacy) Tabnine v3.335.0
Install GitHub Copilot. Tabnine is no longer a product a developer can buy, and its extension has not shipped an update since January 9, 2026. Tricentis acquired Tabnine on July 30, 2026. tabnine.com returns a 301 to tricentis.com/products, tabnine.com/pricing redirects to a contact form, and the VS Code listing is now named “(Legacy) Tabnine” at version 3.335.0, with 9.65 million installs and a 4.0 rating. Customers who already pay keep support. Nobody new can sign up.
We installed both on the same 8,600-line FastAPI billing service from October 12 to 16. Copilot won three checks of four. It took 34 of 40 completions unmodified against Tabnine’s 29, it found the misplaced idempotency key behind a double-charge bug in four minutes where Tabnine’s chat needed nineteen and a hint, and it finished a seven-file currency change with 212 of 212 tests green. Tabnine won the check no cloud tool can win: with egress blocked at the proxy, its local model kept completing code, seven of ten stubs, while Copilot produced nothing.
October 12 to 16, 2026. Both ran as VS Code extensions in the same checkout of an 8,600-line Python 3.13 and FastAPI billing service with 212 pytest tests, green before we started. Copilot ran on the $10 Pro plan; Tabnine ran as (Legacy) Tabnine 3.335.0 on an account opened in March 2025 that still authenticates. Two rules were fixed in advance: a completion counted only if we accepted it with Tab and never edited it, and every task started from the same clean checkout. On October 15 we routed both through a proxy that logged every outbound request, then blocked egress for ten minutes.
| Metric | GitHub Copilot | Tabnine |
|---|---|---|
| Task 1: completions accepted unmodified (of 40) | 34 ✓ | 29 |
| Task 1: median latency to first suggestion | 210 ms | 88 ms ✓ |
| Task 2: named the misplaced idempotency key | Yes, first answer, 4 min ✓ | No, after a hint, 19 min |
| Task 3: files the tool changed itself | 7 ✓ | 4, as snippets we pasted |
| Task 3: tests passing at handoff (of 212) | 212 ✓ | 198 |
| Task 4: outbound requests in 60 min of completions | 214 | 2, both at sign-in ✓ |
| Task 4: completions with all egress blocked (of 10) | 0 | 7 ✓ |
| Winner | 🏆 GitHub Copilot: diagnosis, multi-file work, a price you can look up | Tabnine: offline completions, 88 ms, zero source egress |
Side-by-side breakdown across key categories
| Feature | GitHub Copilot | Tabnine | Winner |
|---|---|---|---|
| What it is in 2026 | A sold and supported platform: completions, agent mode, code review and the CLI | (Legacy) Tabnine 3.335.0, an IDE plugin with chat and local completions, no agent mode | GitHub Copilot |
| Ownership | GitHub. Billing rebuilt on June 1, 2026 and a new Max tier added in May | Acquired by Tricentis on July 30, 2026. What the buyer described was the Enterprise Context Engine, not the plugin | GitHub Copilot |
| Can you buy it today | Yes, in five self-serve tiers from $0 to $100 | No public price. tabnine.com/pricing redirects to a contact form | GitHub Copilot |
| Deployment | Cloud only. File exclusions exist on Business and Enterprise | SaaS, private VPC, on-premises and fully air-gapped | Tabnine |
| Works with no network | No. 0 of 10 completions with egress blocked | Yes. 7 of 10 completions, unchanged latency | Tabnine |
| Multi-file agent | Plans, edits, runs the tests and reports what it could not finish | None in 3.335.0. The agentic tier lived on Tabnine’s enterprise platform | GitHub Copilot |
| Tier | GitHub Copilot | Tabnine |
|---|---|---|
| Free | $0: 2,000 completions a month, a small credit allowance, Auto model selection only | No self-serve sign-up. The old Basic tier was retired in April 2025 |
| Individual paid | Pro $10/mo: 1,500 credits (1,000 base plus 500 flex). One credit is $0.01 | Last list price: Dev $9/user/mo annual, as published in March 2026. Not on the web in October |
| Team | Business $19/user/mo: 1,900 credits, policy controls and audit logs | Last list price: Enterprise $39/user/mo annual, quote-based since the acquisition |
| Top of range | Pro+ $39 (7,000 credits), Max $100 (20,000 credits) | Agentic Platform $59/user/mo annual on the March 2026 list, now sold inside Tricentis |
Copilot’s numbers are GitHub’s published allowances as of October 2026. On June 1, 2026 premium request units were replaced by AI Credits at a fixed cent each, metered by token at each model’s API rate. Code completions and next-edit suggestions stay unlimited and cost no credits on any paid plan. Everything else does: chat, agent mode, code review, the CLI. Unused credits do not roll over, and the automatic downgrade to a cheaper model is gone, so a drained balance stops agent work until the month resets. Set a spending cap before your first agent session.
Tabnine has no page to compare against: tabnine.com/pricing 301s to a Tricentis contact form, so the figures above are good only for benchmarking a renewal quote. Our method is on the How We Evaluate page.
One of these is a product with a roadmap. The other is an excellent autocomplete engine its owner stopped selling in July. The five days agree with the paperwork.
Seven files, 212 of 212 tests, a four-minute diagnosis and $10 a month. Nothing else here is still being sold.
7 of 10 completions with egress blocked, two outbound requests in an hour. If policy forbids sending code to a vendor, this is the only option here that works.
Contracts are supported and the plugin still authenticates. Ask Tricentis what you are paying for before the first renewal.
Yes, but not as something you can buy. (Legacy) Tabnine 3.335.0 still installs from the VS Code marketplace with 9.65 million installs, and the JetBrains listing now redirects with “legacy” in its slug. docs.tabnine.com still loads. What went away is the front door: tabnine.com 301s to tricentis.com/products, pricing 301s to a contact form. Tricentis says existing customers keep support and has said nothing about the plugin roadmap.
Not since April 2025, when Tabnine retired its free Basic tier. The last public list was Dev at $9 per user per month billed annually, Enterprise at $39 and an Agentic Platform at $59, with 90-day trials. Since the July 2026 acquisition there is no free tier, no public price and no trial button on any Tabnine domain. A page still quoting $0 is describing a plan retired a year before the sale.
If you work on a connected machine, yes. Copilot won diagnosis, multi-file editing and the price question in our five days, at $10 against a renewal you cannot price. The migration is small: Copilot indexed the 8,600-line repository in 40 minutes, and the only thing that does not port is Tabnine’s file exclusions, which become Copilot content exclusions on Business or Enterprise. Keep Tabnine only if air-gapped operation is contractual, and take that conversation to Tricentis.
Copilot earned this on day two: it named the cause of the double charge before we finished reading its answer, then changed seven files and left the suite green. The $10 Pro plan covers that work with 1,500 credits, and completions never touch them. Only reach for Tabnine if you have an existing contract or a policy that keeps your source off the internet.
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