Coding · Head-to-head
GPT-5.5 vs Codeium (now Windsurf Plugins)
GPT-5.5 (paid, AI Score 8.7/10) vs Codeium (now Windsurf Plugins) (freemium, AI Score 7/10). Side-by-side pricing, features, pros and cons, and which to pick.
The verdict
Pick GPT-5.5 if…
- →overall capability matters more than price (AI Score 8.7 vs 7)
- →your primary use case is teams already running gpt-5.5 in production who want a generally-available, independently benchmarked frontier model rather than switching a working stack to a newer gated preview.
- →you need: agents
Pick Codeium (now Windsurf Plugins) if…
- →budget is the constraint
- →your primary use case is jetbrains, neovim or eclipse developers who want ai completion and chat in the editor they already use, and teams whose compliance rules require a self-hosted deployment.
Side-by-side specs
| Spec | GPT-5.5 | Codeium (now Windsurf Plugins) |
|---|---|---|
| Category | Coding | Coding |
| Pricing model | paid | freemium |
| Headline pricing | API: $5/$30 per 1M tokens (in/out) as last published. ChatGPT Plus $20/mo, Pro $200/mo | Free tier (credit-limited); paid plans — check windsurf.com/pricing |
| Free tier | No free API tier. ChatGPT's free plan does not include GPT-5.5; free traffic routes to smaller models. | Yes — but credit-metered, not the unlimited autocomplete this product was originally known for. Confirm current credit allowances on windsurf.com/pricing. |
| AI Score | 8.7/10 | 7/10 |
| Best for | Teams already running GPT-5.5 in production who want a generally-available, independently benchmarked frontier model rather than switching a working stack to a newer gated preview. | JetBrains, Neovim or Eclipse developers who want AI completion and chat in the editor they already use, and teams whose compliance rules require a self-hosted deployment. |
| Editor's pick | — | — |
| Use cases | development agents | development |
| Date added | 2026-05-02 | 2026-04-30 |
Pros and cons
GPT-5.5
Coding · paid
Pros
- ✓Generally available and independently benchmarked, with months of production track record behind it
- ✓Genuine agentic capability: tool use, self-correction and multi-step task completion, not just single-turn answers
- ✓272K context still handles most whole-codebase and long-document work without chunking
- ✓Mini and nano tiers let you route cheap calls without leaving OpenAI
Cons
- ×Superseded by the GPT-5.6 family in June 2026, including as the model behind Codex — this is prior-generation now
- ×Still carries flagship pricing at $5/$30 while GPT-5.6 Terra ($2.50/$15) and Kimi K3 ($3/$15) target similar work for less
- ×272K context now trails the 1M-token windows on Gemini 3.5 Pro and Kimi K3
- ×Closed weights with no self-hosting path, so migration cost is entirely OpenAI's to price
Codeium (now Windsurf Plugins)
Coding · freemium
Pros
- ✓Genuine first-class support for JetBrains, Neovim, Vim, Emacs and Eclipse — editors the VS Code-fork tools cannot reach at all
- ✓Self-hosted and air-gapped enterprise deployment with zero data retention, which Cursor does not offer in any tier
- ✓In-house low-latency completion models keep inline suggestions fast rather than routing each keystroke to a frontier model
- ✓Lets you add AI assistance without migrating your whole team to a new editor, which is the real cost most comparisons ignore
Cons
- ×The unlimited free individual tier that defined this product is gone — plans are now credit-metered, removing its clearest advantage over Copilot
- ×Agentic multi-step coding lives in the standalone Windsurf editor, not the plugins; plugin users get completion and chat, not an autonomous agent
- ×Two ownership changes since 2025 (Google DeepMind hired the founding leadership, Cognition acquired the rest) leave roadmap continuity an open question
- ×Brand is a moving target: the Codeium name is retired, codeium.com redirects, and all docs, pricing and support now sit under windsurf.com
Related comparisons
Updated 2026-08-10. Spec data sourced from official product pages and tracked in our public directory at /tools.