Compare AI tools

	Sudowrite S	GitHub Copilot B	DeepInfra A	Runway S
Tagline	AI writing tool built specifically for fiction writers.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Blazing-fast, pay-as-you-go inference API for open-source LLMs and multimodal models, now plugged directly into the Hugging Face ecosystem.	The pro's AI video tool. Gen-4 is the current bar.
Category	Writing	Coding	Dev Platform	Video
Pricing	$19-$59/mo	Free (limited) + $10/mo Pro + $19/mo Business	Free $5 credit on signup, then pay-as-you-go from $0.06/M tokens	Free + $15-$95/mo
Best for	Novelists, screenwriters, fiction short-form writers.	Teams with GitHub already. Devs who don't want to change IDEs.	Backend developers and ML engineers who want the cheapest reliable inference for open-weight LLMs in production, especially those already living inside the Hugging Face ecosystem.	Marketing video, pitch decks, b-roll, creative shorts.
Strengths	Brainstorm, expand, rewrite modes designed for fiction Story Bible for character + plot tracking Understands voice + tone better than generic chatbots	Great enterprise story Works in your existing IDE Chat + autocomplete	Among the cheapest per-token rates for open-source models — consistently undercuts Together AI and Fireworks on small models OpenAI-compatible API means zero migration headache from existing stacks Now a first-class Hugging Face Inference Provider, so HF-native workflows (SDKs, Playground, agent harnesses) get DeepInfra with a one-line swap Runs on H100/A100 and NVIDIA Blackwell GPUs with auto-scaling and 99.982% uptime SLA on dedicated tier Supports LoRA adapter deployments and private custom model hosting, not just public models	Most mature video workflow Character consistency via Act-One Gen-4 quality is production-grade
Weaknesses	Pricey for casual use Fiction-only focus — not for business writing	Less agentic than Cursor/Claude Code Model quality varies	Primarily developer/API-first — no meaningful consumer-facing product or chat UI to speak of Model breadth (77 tracked) lags behind aggregators like OpenRouter or Replicate for niche or newly-released models No free tier beyond the $5 signup credit; requires a card or prepayment to continue	Expensive at scale Still needs post-editing
Kai's verdict	S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	DeepInfra is the quiet workhorse of the inference API space — serious price performance on H100s, a genuinely clean OpenAI-compatible API, and now a native HF provider makes it a strong default choice for any team running open-source models at scale. (Verdict pending Phi's full review.)	S-tier. Market leader with reason. Start here for serious video.
Link	Open →	Open →	Open →	Open →