IT AI Index
Index Vendors › Windsurf · September 2026 Edition
1 category · Ranked

Windsurf

89Judge labels
13First choices
14Negative labels
12 of 12Models named it
1Category
September 2026 Edition. Every number here is derived from the raw labels under vendor table vv2026-09.2, every buyer segment counted.
Best standing
19% in AI coding for small business buyers
Rank 2 of 46 in the mid-market standingaccepted challenger
0 of 12 models made it the first choice on the direct prompt; 19% of its 26 labels there were negative.
By buyer segmentStrongest at small business.
In ai coding · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named Windsurf for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrant
AI coding assistantsDeveloper platform10%2 of 4619%26accepted challenger

Movement

This is the first edition on this tier, so no move can be computed for Windsurf yet. From the next edition this section shows, per buyer segment, whether its share moved by more than the measured noise floor.

By model

How each model treated Windsurf across every prompt where it was named for a mid-market B2B company. Twelve models, six prompts per category.
ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.520002
GPT-5.4 mini01102
Gemini 3.5 Flash01012
Perplexity Sonar00000
Grok 4.1 Fast11002
Mistral Small01102
DeepSeek V4 Flash10113
Llama 4 Maverick01001
Qwen 3.7 Flash10214
Kimi K211013
GLM 4.7 FlashX03014
MiniMax M2.501001

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct9 labels1
Paraphrase11 labels3
Comparative17 labels1not counted in share
Budget-constrained24 labels9
Scale-constrained13 labelsNone
Negative15 labelsNone
First choiceAlternativeMentionNegative89 labels in all, every segment counted; 13 of the 14 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“Codeium (Best Free Option) ... Codeium's free tier or GitHub Copilot's $10/month plan offer the best balance of cost and functionality.” Claude Haiku 4.5 · AI coding · budget prompt · first choice
“recommend starting with GitHub Copilot ... or Codeium (for cost efficiency and privacy options) as pilots” Claude Haiku 4.5 · AI coding · paraphrase prompt · first choice
“Windsurf is widely considered one of the best AI coding assistants for companies with a limited budget” Qwen 3.7 Flash · AI coding · budget prompt · first choice
“Start with Codeium's free tier — it offers the most generous free plan with unlimited completions.” Kimi K2 · AI coding · budget prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“avoid standard free-tier or public instances of major AI coding assistants (such as GitHub Copilot standard, Cursor, or Windsurf)” Qwen 3.7 Flash · AI coding · negative prompt · hard negative
“Listed among tools impacted by IDEsaster; vulnerable to the same chaining of prompt injection with IDE features” GLM 4.7 FlashX · AI coding · negative prompt · hard negative
“Avoid: Free tiers of Copilot/Windsurf for proprietary code” DeepSeek V4 Flash · AI coding · negative prompt · hard negative
“(such as Claude Code, Devin, Cursor, and Windsurf) ... they introduce severe new attack surfaces” Gemini 3.5 Flash · AI coding · negative prompt · soft negative

Named alongside

The products named in the same answers as Windsurf, over the 80 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Windsurf was named but was not.
ProductSame answerTook the first choice insteadHead to head
Tabnine49 of 805Not in the top three
Amazon Q Developer32 of 801Not in the top three
Claude Code27 of 800Not in the top three
Continue13 of 801Not in the top three
Cline11 of 802Not in the top three
Aider9 of 801Not in the top three
Replit AI9 of 801Not in the top three
Sourcegraph Cody9 of 800Not in the top three
A head-to-head page exists where both products are in a category's top three. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Windsurf. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, four of the twelve in this edition, so these counts come from 66 of the 80 answers that named Windsurf and are not a share of its labels.

Domains cited

axify.io32
memeburn.com25
dev.to22
learn.g2.com19
tech-insider.org19
augmentcode.com18
zapier.com15
daily.dev12
getdx.com12
layer3labs.io12

186 of the 186 domain citations in answers naming Windsurf came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Names read as Windsurf

What the judge wrote, as written, with how often. The vendor table decides that these count as Windsurf; a claim can dispute any of them.
Codeium 11Codeium / Windsurf 2Windsurf (formerly Codeium) 2Codeium (Windsurf) 1Codeium's enterprise tier 1Windsurf (by Codeium) 1
Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Windsurf's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Windsurf, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

It does not get any change to labels, shares or verdicts, any preview, or any say over which quotes appear. A verification link goes to your work email; an address at windsurf.com is approved on the spot, any other address is reviewed by hand.

Your name and company appear on the claimed page, or the company alone if you ask below. A title and a LinkedIn address appear there too if you give them, and are left off if you do not. Your email address is never published.

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