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Cosine vs Windsurf: Which Coding Agents Is Better in 2026?

Compare pricing, features, integrations, verified reviews, AI capabilities, security, and customer satisfaction, side by side, with no marketing spin.

Cosine
Cosine
Rating
,
Reviews
0
From
Custom

in Coding Agents

Windsurf
Windsurf
Leads 5/9
Rating
,
Reviews
0
From
$20/mo

in Coding Agents

Jump to scorecard Ask SIA

The Short Answer

Cosine vs Windsurf, in 15 seconds

Choose Cosine if…

  • You depend on a broad integration ecosystem

Choose Windsurf if…

  • You want the lower entry price
  • You need a genuinely free plan
  • You have strict security & compliance needs
  • You need the broader feature set

Head-to-Head Scorecard

How Cosine and Windsurf score

Windsurf leads on 5 of 9 measured dimensions.

  • Customer Rating

    Average score from verified user reviews

    Even
    Cosine
    No reviews
    Windsurf
    No reviews

  • Review Volume

    Number of verified reviews, a proxy for adoption

    Even
    Cosine
    0
    Windsurf
    0

  • Entry Pricing

    Lowest published starting price (free plan = lowest)

    Windsurf
    Cosine
    Custom
    Windsurf
    $20/mo

  • Free Access

    Availability of a free plan and/or free trial

    Windsurf
    Cosine
    Paid only
    Windsurf
    Free plan

  • Integrations

    Number of listed third-party integrations

    Cosine
    Cosine
    6
    Windsurf
    4

  • Features

    Number of listed product capabilities

    Windsurf
    Cosine
    6
    Windsurf
    8

  • AI Features

    Capabilities mentioning AI, automation or ML

    Even
    Cosine
    ,
    Windsurf
    ,

  • Security & Compliance

    Number of listed compliance certifications

    Windsurf
    Cosine
    1
    Windsurf
    3

  • Platforms & Deployment

    Supported platforms and deployment options

    Windsurf
    Cosine
    4
    Windsurf
    5

Feature Comparison

Cosine vs Windsurf feature breakdown

Search or filter the full feature matrix, core features, AI, integrations, APIs, security and compliance.

Cosine
Windsurf
Overview
User rating
,
,
Pricing model
QUOTE_BASED
FREEMIUM
Starting price
Custom
$20/mo
Free version
Free trial
Features
Key capabilities
Lumen ScoutLumen OutpostLumen SovereignLegacy and niche languagesCLI accessCloud collaboration platform
Cascade agentTab autocompleteCodebase context retrievalCommand executionLive previewsMemories and rules+2
AI features
,
,
Integrations & API
Integrations
GitHubVS CodeJetBrainsGitOpenAIAnthropic
GitHubModel Context ProtocolJetBrains IDEsVS Code extensions
Public API
Platforms
Deployment
CloudOn-premise
Cloud
Platforms
WebAPI
WebmacOSWindowsLinux
Mobile support
Security & Compliance
Compliance
SOC 2
SOC 2 Type IIGDPRHIPAA
Vendor
Company
,
,
Verified
Founded
2022
2021
Headquarters
London, United Kingdom
Mountain View, California, USA

Pricing Comparison

Cosine vs Windsurf pricing

Entry pricing, plan tiers and the cost factors that shape total cost of ownership.

Cosine

Custom to start
CustomCustom
  • Cloud, single-tenant or air-gapped deployment
  • Lumen models
  • Contact vendor for quote

Windsurf

$20/mo to start
FreeFree
  • Limited daily and weekly quota
Pro$20/month
  • Higher quotas
  • Third-party reported price
Max$200/month
  • Highest individual quotas
  • Third-party reported price
Teams$40/user/month
  • Team admin features
  • Third-party reported price
EnterpriseCustom
  • Custom pricing
  • Self-hosted option

Total cost of ownership factors

Free planCosine Windsurf
Free trial to evaluateCosine Windsurf
Transparent published pricingCosine Windsurf
Public API (build vs. buy add-ons)Cosine Windsurf

Beyond list price, factor in implementation, training, add-ons and per-seat scaling when estimating total cost of ownership.

Pros & Cons

Cosine vs Windsurf: strengths and trade-offs

Cosine

Pros

  • Broad integration ecosystem (6)
  • Compliance: SOC 2
  • Public API available

Cons

  • No free plan
  • No free trial
  • Pricing is quote-based (less transparent)

Windsurf

Pros

  • Free plan available
  • Compliance: SOC 2 Type II, GDPR, HIPAA

Cons

  • Fewer native integrations than the alternative

Buyer Fit

Who should use Cosine vs Windsurf?

Startups

Windsurf

Windsurf keeps early-stage costs lowest with its entry tier.

Small businesses

Windsurf

Windsurf offers the most accessible pricing for lean teams.

Agencies

Cosine

Cosine connects to more tools for multi-client workflows.

Enterprises

Windsurf

Windsurf leads on compliance and breadth for complex needs.

Ecommerce

Cosine

Cosine integrates with more of the commerce stack.

SaaS companies

Cosine

Cosine is the more developer- and automation-friendly choice.

Integration overlap

Shared integrations (1)

GitHub

Only in Cosine (5)

VS CodeJetBrainsGitOpenAIAnthropic

Only in Windsurf (3)

Model Context ProtocolJetBrains IDEsVS Code extensions

Keep Exploring

Other alternatives worth considering

Similar coding agents products buyers compare alongside Cosine and Windsurf.

Tempo Labs

Tempo Labs

Free
Poolside

Poolside

Custom
Ellipsis

Ellipsis

Free
v0 by Vercel

v0 by Vercel

Free
Swimm

Swimm

Custom
CodeWP

CodeWP

Free
More Cosine alternatives →More Windsurf alternatives →

Ask SIA which solution fits your business

SIA, Saaskart's AI buying assistant, weighs Cosine and Windsurf against your team size, budget, integrations and compliance needs, then recommends the right fit and the questions to ask each vendor.

Get a personalised recommendation

Cosine vs Windsurf, Frequently Asked Questions

What is the difference between Cosine and Windsurf?

Cosine and Windsurf are both Coding Agents solutions. Cosine is rated 0.0/5 by 0 users, while Windsurf is rated 0.0/5 by 0 users. The main differences lie in pricing, features, and target audience.

Which is better, Cosine or Windsurf?

Based on user ratings, Cosine scores higher at 0.0/5. The best choice depends on your team size, budget, and specific requirements.

Which is cheaper, Cosine or Windsurf?

Windsurf is the more affordable option, starting at $20/month.

Does Cosine or Windsurf have a free plan?

Windsurf offers a free plan. Cosine does not have a free tier but offers paid plans.

Can I switch from Cosine to Windsurf?

Switching between Cosine and Windsurf is possible. Both support data export. Check integration compatibility and plan for data migration to minimise disruption to your team.

Who should use Cosine vs Windsurf?

Cosine is best suited for teams that prioritise enterprise features. Windsurf works well for teams looking to start free and scale.

Our Verdict

The bottom line on Cosine vs Windsurf

Best Overall

Either

It's a tie balances user satisfaction and proven adoption.

Best for Startups

Windsurf

Windsurf has the friendliest entry point for new teams.

Best for Enterprise

Windsurf

Windsurf leads on compliance and feature breadth.

Best Value

Windsurf

Windsurf delivers the lowest cost to get started.

Best AI Features

Either

Comparable AI capabilities on both sides.

Highest Rated

Either

Both earn equal user ratings.

Ready to decide between Cosine and Windsurf?

Visit Cosine Visit Windsurf Ask SIA
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