
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
CodeGateway records 3,745 monthly visits with +0.6% month-over-month growth and Free Trial, Paid pricing. QuillBot Paraphraser records 36,630,337 monthly visits with +2.3% growth and Freemium pricing.

One API key, one invoice for Claude, GPT and Gemini
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | codegateway.dev | quillbot.com |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 3.75K (3,745) | 36.63M (36,630,337) |
| MoM Traffic Delta | +22 (+0.6%) | +824.67K (+2.3%) |
| Primary Market & Share | 🇺🇸 United States (59.6%) | 🇺🇸 United States (25.1%) |
| Direct Visits / mo | 1.23K | 10.99M |
| User Rating | 4.1 | 4.5 |
| Supported Platforms | Website | Website |

One API key, one invoice for Claude, GPT and Gemini
Create a workspace, share one balance across members with owner, admin and member roles, and settle everything on a single invoice.
One API key reaches Anthropic, OpenAI, Google and DeepSeek families through Anthropic Messages, OpenAI Chat Completions and Responses endpoints.
Live token usage, cost breakdowns, per-member attribution and exportable billing so you know where spend goes.
Requests are served from Cloudflare's global edge, keeping latency low for geographically spread teams.
Paraphrase, proofread and summarize text with an AI writing workspace
Rewrite sentences and paragraphs in modes like Standard, Fluency, Formal, Simple, Creative and Shorten/Expand to match tone and length.
Scan your text for grammar, spelling, punctuation and clarity issues and apply suggested fixes.
Condense long documents or articles into key points, with adjustable length.
Generate citations in APA, MLA, Chicago and other styles from a URL, title or DOI.

OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

Provides industry-leading real-time grammar checking and style suggestions, but offers less versatile sentence paraphrasing than QuillBot.
Provides industry-leading real-time grammar checking and style suggestions, but offers less versatile sentence paraphrasing than QuillBot.
One API key for hundreds of AI models from every major provider

SpecialistExcels at academic citation generation and professional proofreading, but lacks QuillBot's quick interactive paraphrasing slider.
SpecialistExcels at academic citation generation and professional proofreading, but lacks QuillBot's quick interactive paraphrasing slider.
SpecialistSpecializes in humanizing AI-generated text to bypass detection, but offers less traditional rewriting flexibility than QuillBot.
SpecialistSpecializes in humanizing AI-generated text to bypass detection, but offers less traditional rewriting flexibility than QuillBot.
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
SpecialistHighlights readability issues and complex sentences to improve clarity, but does not automatically rewrite text like QuillBot.
SpecialistHighlights readability issues and complex sentences to improve clarity, but does not automatically rewrite text like QuillBot.

One OpenAI-compatible API key for 500+ AI models
One OpenAI-compatible API key for 500+ AI models

Free / Open-sourceOne open-source AI gateway for 100+ LLM providers

One unified API for 100+ AI models, with insurance when output disappoints
One unified API for 100+ AI models, with insurance when output disappoints