
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
Aider records 280,030 monthly visits with +2% month-over-month growth and Free pricing. DeepSeek records 372,761,591 monthly visits with +4.3% growth and Freemium pricing.

Open-source AI pair programming inside your terminal and git repo
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | aider.chat | deepseek.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 280.03K (280,030) | 372.76M (372,761,591) |
| MoM Traffic Delta | +5.47K (+2%) | +15.36M (+4.3%) |
| Primary Market & Share | 🇺🇸 United States (14.8%) | 🇨🇳 China (50.5%) |
| Direct Visits / mo | 94.39K | 291.59M |
| User Rating | 4.8 | 4.8 |
| Supported Platforms | Website | Website |

Open-source AI pair programming inside your terminal and git repo
Chat with an AI assistant from your shell, have it propose and apply code edits to files in your working directory, and keep full control of the final diff.
Every accepted change becomes a real commit with an auto-written message, so you can inspect, amend, revert or branch AI edits with ordinary git commands.
Aider builds a structural map of your project so the model understands where relevant code lives and can work sensibly in large, multi-file codebases.
Connect hosted models from Anthropic, OpenAI, DeepSeek and others, or point Aider at a locally hosted model to keep code on your own hardware.
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Leverages a sparse Mixture-of-Experts architecture (49B active parameters out of 1.6T on V4-Pro) to process up to 1 million tokens with minimal latency and memory overhead.
Pioneered by DeepSeek-R1 and integrated into V3.2 and V4 thinking modes, exposing step-by-step self-verification for complex math, logic, and code debugging.
Drops input token costs to $0.003/1M on Flash and $0.022/1M on V4-Pro for cache hits, with 50% lower rates during off-peak UTC hours.
Provides free access at chat.deepseek.com and on iOS/Android with document uploads, reasoning mode, and web search without paywalling core models.

Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.

Offers an enormous context window and deep Google ecosystem integration, but feels less specialized for pure reasoning tasks.
Offers an enormous context window and deep Google ecosystem integration, but feels less specialized for pure reasoning tasks.
Delivers superior long-form coding artifacts and nuanced writing, but lacks DeepSeek's specialized open-weight reasoning models.
Delivers superior long-form coding artifacts and nuanced writing, but lacks DeepSeek's specialized open-weight reasoning models.

Features real-time X social data integration, but is less cost-effective for dedicated developer coding workflows.
Features real-time X social data integration, but is less cost-effective for dedicated developer coding workflows.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.

Free / Open-sourceProvides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup.
Free / Open-sourceProvides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup.

SpecialistThe AI coding agent for building ambitious software
SpecialistThe AI coding agent for building ambitious software

SpecialistExcels at ultra-long document analysis and research, but lacks the same level of open-weight developer community support.
SpecialistExcels at ultra-long document analysis and research, but lacks the same level of open-weight developer community support.
Advanced agentic development platform with CLI and desktop command center for running parallel coding agents across projects.
Advanced agentic development platform with CLI and desktop command center for running parallel coding agents across projects.
Free / Open-sourceEnables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power.
Free / Open-sourceEnables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power.
SpecialistIDE plugin and platform that reads entire codebases to plan tasks, offering a structured alternative to CLI pair programming.
SpecialistIDE plugin and platform that reads entire codebases to plan tasks, offering a structured alternative to CLI pair programming.

Full-featured AI code editor with autonomous multi-file editing, but operates within a dedicated GUI rather than the command line.
Full-featured AI code editor with autonomous multi-file editing, but operates within a dedicated GUI rather than the command line.