OpenCode vs Gemini CLI vs Diffblue Cover vs Google Antigravity

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
OpenCode
vs
Competitor 1
Gemini CLI
Competitor 2
Diffblue Cover
Competitor 3
Google Antigravity
Compare
4 tools · best value per row highlighted
Your tool OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
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Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
Make main Remove
Competitor Diffblue Cover
diffblue.com
Diffblue Cover, now offered as the Diffblue Testing Agent, generates, verifies and fixes unit tests autonomously across enterprise codebases.
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Competitor Google Antigravity
antigravity.google
Google Antigravity assumes you already think in agent-driven workflows
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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14Mvisits/mo
MoM change
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▼ 3.1%
6-month growth
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-31.9%
Global rank web
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Avg. last 3 months
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15.4M
Bounce rate lower is better
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48%
Pages / visit
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2.2
Visit duration
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3m 35s
Traffic sources
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● Direct 58% · ● Referral 42%
OpenCodeGemini CLIDiffblue CoverGoogle Antigravity
05.4M10.8M16.2M21.6MGoogle Antigravity · 12.1MGoogle Antigravity · 15.1MGoogle Antigravity · 15.9MGoogle Antigravity · 21.6MGoogle Antigravity · 20.5MGoogle Antigravity · 16.4MGoogle Antigravity · 21.5MGoogle Antigravity · 17.9MGoogle Antigravity · 14.4MGoogle Antigravity · 14M10M100MGoogle Antigravity · 12.1MGoogle Antigravity · 15.1MGoogle Antigravity · 15.9MGoogle Antigravity · 21.6MGoogle Antigravity · 20.5MGoogle Antigravity · 16.4MGoogle Antigravity · 21.5MGoogle Antigravity · 17.9MGoogle Antigravity · 14.4MGoogle Antigravity · 14MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Free
Paid
Free
Starting price
Free
Free
$1,500per month
Free
Free tier
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Free trial
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API access
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Plans
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Free (personal Google account) Free
Starter package $1,500Enterprise Custom
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Capabilities input → output
Input
CodeText
CodeDocumentsImagesText
Code
CodeText
Output
Code
Code
Code
AppsCode
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI Testing
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
6
9
9
Agents
Coding
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Development
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Developer tools
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Test creation
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Test generation
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Unit tests
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Agent creation
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Agent management
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Code autocompletion
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Code testing
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Terminal
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Test automation
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Testing
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Code analysis
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Debugging
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Frontend development
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GitHub pull requests
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Local AI
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Self hosted
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Test cases
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
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▲ 1
Saves
0
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Reviews
0
0
0
0
Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.