Code AI · PROFILE REVIEWED 13 SEPTEMBER 2026

Devin Fusion

A multi-model coding harness that keeps a frontier lead in control while a sidekick handles delegated execution. Published cost reductions make it a credible pilot candidate, but quality varies by benchmark and independent accepted-change, security and complete-cost testing is pending.

BEST FOREngineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding workNOT IDEAL FORTwo-agent orchestration adds failure paths and makes spend attribution more complex

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Price: Included within Devin plan quotas; current Pro is $20/month, Max $200/month, and Teams $80/month plus $40 per full developer seat; extra usage uses API pricing · Profile record only; separate pricing check not recorded: 13 September 2026. USD list price; UK price/VAT to confirm.
Access: Free plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026

EDITORIAL PROFILEIndependently structuredPRICING CHECKSeparate check not recordedDISCLOSURENo pay-to-win score

THE SHORT ANSWER

Is Devin Fusion the same as a free SWE-1.5 model?

No. Fusion is a multi-model workflow in Devin CLI: one model leads and another handles supporting work. SWE-1.5, SWE-2 and the agent product are not interchangeable names. An old beta or credit promotion is not proof of free access today.

Try this: Open the current model picker and billing page. Save the named lead model, supporting model and charge rules; set a small task budget before a pilot.

Sources checked 26 October 2026: Cognition: Devin CLI and Fusion ↗

BEFORE YOU BUY

Devin Fusion: evidence before purchase

What we can verify

Supplier information and independent test results are separate. Check the linked product and pricing sources before purchase.

What an independent test needs to cover

Test output accuracy, retries, reviewer effort, data handling and total cost using the pilot below. No completion date is scheduled; a score will require a published method and results.

Supplier facts recorded: 13 September 2026; Recheck required: more than 30 days since check. This is not an independent test date.
Methodology checked on: 7 October 2026

Price and UK access check

Pricing freshness: Check date not recorded.

Official sources

VERIFIED CHANGE HISTORY

What changed for Devin Fusion.

Open Change Radar →

Launch13 Sep 2026

Cognition brings Fusion to Devin Desktop and CLI

Teams can test multi-model coding without building a router, but reported savings vary by task and do not prove lower accepted-change cost on their repositories.

Cognition Fusion launch ↗

Launch13 Sep 2026

Cognition releases SWE-2 for agentic coding

Paid Devin users can evaluate SWE-2 under a time-limited promotion, but future terms and independent task performance remain unverified.

Cognition SWE-2 launch ↗

EDITOR VERDICT

A multi-model coding harness that keeps a frontier lead in control while a sidekick handles delegated execution. Published cost reductions make it a credible pilot candidate, but quality varies by benchmark and independent accepted-change, security and complete-cost testing is pending.

WHAT IT IS

Devin Fusion, explained.

Devin Fusion is designed for engineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding work. HubAI treats it as a workflow purchase rather than a novelty: the relevant question is whether it produces an acceptable result repeatedly, with controls your team can understand and a cost that remains predictable after the trial ends.

Best forEngineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding workTrialFree plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026

60-SECOND BUYING DECISION

Where Devin Fusion fits—and where it does not.

BUY FOR

Engineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding work

MEASURE

accepted, tested code changes with lower cycle time and no increase in escaped defects

MAIN TRADE-OFF

Two-agent orchestration adds failure paths and makes spend attribution more complex

PROOF TEST

Assign the same bounded repository change with tests and security checks.

PRODUCT PROOF

See the workflow before you buy.

PROFILE REVIEW · 13 SEPTEMBER 2026

DEOfficial Devin CLI walkthrough and Fusion architecture demonstration

Bring one representative input

Run the same job three times

Measure accepted output and cost

DATA & PRIVACY

Review repository access, code retention, training use and secret handling.

DEPLOYMENT

Editor or browser workspace with repository connections.

WORKS WITH

Git · IDE · Deployments

EDITORIAL STATUS

Vendor facts and HubAI opinion are separated. Sponsored placement cannot buy a higher score.

HUBAI PROCUREMENT PASSPORT

A buying record your team can challenge.

One compact record for price, access, data handling, deployment and the test that must pass before adoption.

BUY FOREngineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding workCOMMERCIAL ROUTEIncluded within Devin plan quotas; current Pro is $20/month, Max $200/month, and Teams $80/month plus $40 per full developer seat; extra usage uses API pricing · Profile record only; separate pricing check not recorded: 13 September 2026. USD list price; UK price/VAT to confirm.Free plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026

DATA & PRIVACYNeeds buyer verification

Review repository access, code retention, training use and secret handling.

DEPLOYMENTRoute mapped

Editor or browser workspace with repository connections.

INTEGRATIONS3 named routes

Git · IDE · Deployments

PROOF TESTRequired before scale

Assign a bounded code change and verify tests, security and maintainability.

STRENGTHS

What earns its shortlist place.

+01

Lead and sidekick keep separate persistent contexts instead of relying on one routing decision

Why it matters: accelerates repository navigation.

+02

Frontier lead reviews delegated work and can take control back

Why it matters: removes repetitive implementation work.

+03

Available across Devin Desktop and CLI with multiple provider pairings

Why it matters: keeps explanation and change close together.

LIMITATIONS

What can break the business case.

−01

Two-agent orchestration adds failure paths and makes spend attribution more complex

Buyer impact: can create plausible but fragile code.

−02

Published benchmark savings do not guarantee equal quality or lower cost on a real repository

Buyer impact: moves effort into review and testing.

−03

Full model access and promotional SWE-2 terms depend on a paid plan

Buyer impact: requires policy controls for private repositories.

Cost reality

The subscription price is only the starting point. HubAI evaluates usage limits, failed attempts and the work needed to produce one usable result. Pricing changes frequently, so the structure and verification date matter more than a headline price.

PRICING DECODER

Budget for the result, not the plan badge.

Published structure: Included within Devin plan quotas; current Pro is $20/month, Max $200/month, and Teams $80/month plus $40 per full developer seat; extra usage uses API pricing · Profile record only; separate pricing check not recorded: 13 September 2026. USD list price; UK price/VAT to confirm.
Free or trial route: Free plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026
Primary cost driver: seat price, premium requests, agent runs and reviewer correction time
Budget test: Record the total cost, attempts and human correction needed to produce ten accepted results.

Separate pricing check date: not recorded. Profile review: 13 September 2026. Confirm live price, VAT, region, usage rights and cancellation terms with the vendor before purchase.

HUBAI TRUE COST LAB

What does one accepted result really cost?

Model your own usage. HubAI separates subscription cost from retries and human review—without pretending a headline plan price tells the whole story.

DERIVED VALUE · EFFECTIVE COST / ACCEPTED OUTPUT£3.414286Human review dominates

Expected accepted outputs70

Expected unaccepted attempts30

Cost compositionper accepted output

PRACTICAL GUIDE

Where Devin Fusion earns its place.

Navigate and explain an unfamiliar repository

Test this job with your own inputs and judge the finished result—not the first draft.

Draft implementation changes with tests

Test this job with your own inputs and judge the finished result—not the first draft.

Review repetitive code and documentation work

Test this job with your own inputs and judge the finished result—not the first draft.

A safer four-step trial

Start with one narrow job that matches Devin Fusion's strongest use case.
Prepare approved source material, examples and a clear acceptance standard.
Run three realistic tasks and record attempts, correction time and export quality.
Keep human approval before publishing, sending or acting on the result.

READY-TO-USE PROMPTS

Start with a better brief.

Act as a specialist in code ai. Ask me three questions before creating the first draft. The outcome I need is: [describe outcome].

Create two approaches for [task]. Use this audience: [audience]. Respect these constraints: [constraints]. Explain the trade-off between the two approaches.

Review this output against accuracy, tone, privacy, cost and usability. List the changes required before a person should approve it.

RISK & GOVERNANCE

What to check before adoption.

Do not place confidential, personal or rights-restricted material into Devin Fusion until your organisation has reviewed its current terms, retention settings and account controls. AI output can be plausible and still wrong; regulated, financial, legal and employment decisions require qualified human review.

HUBAI REVIEW RECORD

What HubAI checked—and when.

This is HubAI's editorial record, not the vendor's product changelog or a live uptime claim.

04 SEP 2026

Decision layer expanded

Use-case routes, relevant comparisons and alternatives connected to the product profile.

03 SEP 2026

Commercial profile reviewed

Entry price structure, free or trial route and buyer limitations checked for editorial use.

13 September 2026

Editorial profile published

Verdict, best fit, strengths, limitations, prompts and governance questions structured.

ALSO SHORTLIST

Alternatives to Devin Fusion

MWMuse Wonder

A measured pilot of long-context coding or reasoning through Meta's hosted API

MFMuse Wonder Full

Evaluating the higher-capability Muse model inside an eligible coding subscription

MCMuse Code

Terminal-based repository work with explicit approval and change review

QUICK COMPARISON

Devin Fusion against its closest shelf.

Scores are editorial signals, not a universal winner. Choose around the exact job and run the same proof test.

Product	Best for	Price structure	Access	Decision
Devin Fusion CURRENT	Engineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding work	Included within Devin plan quotas; current Pro is $20/month, Max $200/month, and Teams $80/month plus $40 per full developer seat; extra usage uses API pricing · Profile record only; separate pricing check not recorded: 13 September 2026. USD list price; UK price/VAT to confirm.	Free plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026	Current profile
Muse Wonder	A measured pilot of long-context coding or reasoning through Meta's hosted API	USD per million tokens: $4 input, $0.20 cached input, $20 output. Web grounding adds $2.50 per 1,000 search queries; no long-context premium is listed. · Recorded check: 14 October 2026. USD list price; UK price/VAT to confirm.	Paid preview API or Muse Code subscription. No unmetered free trial or UK-specific entitlement verified.	Compare →
Muse Wonder Full	Evaluating the higher-capability Muse model inside an eligible coding subscription	Muse Code Power Usage $50/month or Maximum $200/month, USD list prices. These are subscription prices, not Full API token rates. · Recorded check: 14 October 2026. USD list price; UK price/VAT to confirm.	Subscription-only route; no public pay-as-you-go API or unmetered trial verified. Confirm UK account eligibility before paying.	Compare →
Muse Code	Terminal-based repository work with explicit approval and change review	USD monthly plans: Everyday $5, High Usage $15, Power Usage $50, Maximum $200. Wonder Full requires one of the upper two plans; verify current usage allowances. · Recorded check: 14 October 2026. USD list price; UK price/VAT to confirm.	Published paid subscriptions; no unlimited free trial or universal UK availability verified.	Compare →

PROCUREMENT CHECKLIST

Questions to answer before adoption.

01What repository data is retained or used for training?
02Can policies block secrets and unsafe commands?
03Which IDE and Git workflows are supported?
04How much reviewer time does an accepted change need?

COMMON BUYER QUESTIONS

Devin Fusion FAQ.

What is Devin Fusion best for?

Devin Fusion is best suited to engineering teams testing a frontier lead and lower-cost sidekick on long, repository-level coding work. HubAI's current verdict is: A multi-model coding harness that keeps a frontier lead in control while a sidekick handles delegated execution. Published cost reductions make it a credible pilot candidate, but quality varies by benchmark and independent accepted-change, security and complete-cost testing is pending.

Does Devin Fusion have a free plan or trial?

Free plan has a light quota and limited models; paid plans include full model access, with promotional SWE-2 use through 10 October 2026. Check the official product page before buying because allowances, regions and eligibility can change.

How much does Devin Fusion cost?

Included within Devin plan quotas; current Pro is $20/month, Max $200/month, and Teams $80/month plus $40 per full developer seat; extra usage uses API pricing · Profile record only; separate pricing check not recorded: 13 September 2026. USD list price; UK price/VAT to confirm.. The useful comparison is total cost per accepted result, including retries, limits and human correction—not the advertised entry price alone.

What should I compare with Devin Fusion?

Compare products in the same Code AI shelf against one identical task, acceptance rule and cost window. Focus on accepted, tested code changes with lower cycle time and no increase in escaped defects.