OpenAI Platform records 234,678,639 monthly visits with -9.6% month-over-month growth and Paid pricing. Spellbook records 65,733 monthly visits with +26.1% growth and Free Trial pricing.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
AI contract review and drafting inside Microsoft Word
| Dimension / Metric | | |
|---|---|---|
| Official Domain | openai.com | spellbook.legal |
| Pricing Model | Paid | Free Trial |
| Monthly Visits | 234.68M (234,678,639) | 65.73K (65,733) |
| MoM Traffic Delta | -24.78M (-9.6%) | +13.59K (+26.1%) |
| Primary Market & Share | 🇺🇸 United States (25.4%) | 🇺🇸 United States (82.9%) |
| Direct Visits / mo | 105.1M | 58.45K |
| User Rating | 4.8 | 4.6 |
| Supported Platforms | Website | Website |
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Spanning GPT-6 Astra ($10/$50 per MTok), GPT-6.1 Sol ($2/$10), GPT-6.1 Terra ($1/$5), and GPT-6 Luna ($0.10/$0.50), all with a 1,050,000-token context window and 128K max output.
Tune thinking token budgets per API request across six granularity levels (`none`, `low`, `medium`, `high`, `xhigh`, `max`) to balance latency, accuracy, and cost.
Combine model inference with hosted web search, file search, function calling, and autonomous GUI computer-use actions in a single stateful API call.
Build ultra-low-latency multimodal voice agents billed per second ($0.05/minute) without rounding up to whole minutes.
AI contract review and drafting inside Microsoft Word
Redline contracts directly in Microsoft Word, catch non-standard terms and negotiate from your side with every tracked suggestion visible.
Generate new clauses, full agreements and revisions from AI prompts or from your own saved precedent libraries in seconds.
Encode your team's standards into automated checklists that are enforced on every review, and compare contracts against industry benchmarks.
An AI agent that works through multi-document legal matters with human oversight, plus quick answers to complex legal questions.
Provides direct API access to Google's Gemini models with generous free prototyping tiers, but lacks OpenAI's ecosystem breadth.
Provides direct API access to Google's Gemini models with generous free prototyping tiers, but lacks OpenAI's ecosystem breadth.
Free / Open-sourceAlibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context.
Free / Open-sourceAlibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context.
Unifies hundreds of third-party models under a single API key, offering greater model choice than OpenAI's curated catalog.
Unifies hundreds of third-party models under a single API key, offering greater model choice than OpenAI's curated catalog.
Provides developer APIs for Zhipu AI's proprietary GLM models, serving as an alternative enterprise foundation model stack.
Provides developer APIs for Zhipu AI's proprietary GLM models, serving as an alternative enterprise foundation model stack.
SpecialistOptimized for lightning-fast serverless execution of generative media and image models, rather than general text LLMs.
SpecialistOptimized for lightning-fast serverless execution of generative media and image models, rather than general text LLMs.
Domain-specific AI for law firms, in-house legal teams, and professional services
Domain-specific AI for law firms, in-house legal teams, and professional services
Specializes in high-performance serverless inference and dedicated GPU clusters for open-source models, bypassing closed commercial restrictions.
Specializes in high-performance serverless inference and dedicated GPU clusters for open-source models, bypassing closed commercial restrictions.
SpecialistFocuses heavily on running and fine-tuning open-source vision and language models via simple APIs, unlike OpenAI's hosted closed models.
SpecialistFocuses heavily on running and fine-tuning open-source vision and language models via simple APIs, unlike OpenAI's hosted closed models.
One OpenAI-compatible API for 500+ image, video, audio, and LLM models
One OpenAI-compatible API for 500+ image, video, audio, and LLM models
AI contract drafting, review, and redlining grounded in millions of real agreements
AI contract drafting, review, and redlining grounded in millions of real agreements
SpecialistDelivers ultra-low-cost serverless inference for open-weight models, though with fewer enterprise orchestration tools than OpenAI.
Multimodal foundation models and AI-native products for text, video, image, speech, and music
Multimodal foundation models and AI-native products for text, video, image, speech, and music
