NanoGPT vs T3 Chat

NanoGPT

• Occasional users who would rather pay per message than subscribe
• Developers who want one API key for many model providers
• People who want to pay with cryptocurrency or without an account

T3 Chat

• People who want models from several labs under one account
• Short, frequent chat sessions that fit a quota refilling every 4 hours
• Starting chats from a URL with a preset prompt and model

NanoGPT

• The free allowance is a single model on the web; everything else needs a prepaid balance or the Pro plan.
• Pro's weekly allowance covers only the models included in the subscription; others, such as Claude Opus 5.5, are still billed per use.
• Pinning a specific provider by hand adds 5%, and bring-your-own-key requests are billed at 5% of the normal model cost.
• Access is through the website and the API; the pricing page mentions no desktop or mobile apps.

T3 Chat

• Prices and usage limits are shown only in the app's settings page and could not be read for this listing.
• Usage is metered: long threads, attachments, search and costlier models drain the quota faster, and when both buckets are empty you wait for a refill.
• The terms of service say no refunds are given when you cancel your account.
• The pages that could be read describe a web app only; no desktop or mobile apps are mentioned.

NanoGPT

Hundreds of models in one place

The model directory lists 641 text, 224 image, 183 video, 98 audio and 13 3D models, including ChatGPT, Claude and Gemini, all used from one chat interface and one balance.

Per-use billing at list prices

Text models are billed at the provider's list price per million tokens with no markup, and deposits carry no percentage fee. Each API response reports the exact cost charged.

OpenAI-compatible API

The API follows OpenAI's chat completions and Responses formats and Anthropic's Messages format, and also covers images, video, audio, embeddings, web search and batch jobs.

No stored prompts by default

Prompt and conversation content is not kept on NanoGPT's servers unless you turn on sync or sharing, and the service can be used in an anonymous session with no account.

Card and crypto payments

A balance can be started from $1 by card or $0.10 in cryptocurrency. Selected API endpoints also accept accountless crypto payments with no API key.

TEE-backed models

Some models run in trusted execution environments, and the API returns attestation reports and request signatures so that this can be verified.

T3 Chat

Models from several providers

Runs models from OpenAI, Anthropic and Google and routes others through OpenRouter. The model and its reasoning effort are chosen per chat.

Web search

Search can be switched on for a chat so that answers draw on more recent results, with between 1 and 5 search queries or tool calls allowed per run.

Two-bucket usage meter

Usage is spent from a Base bucket that refills every 4 hours, then from an Overage bucket that refills on the monthly renewal date. Settings show each as its own percentage bar.

File and image attachments

Prompts can include uploaded PDF files, images and text files. Large or numerous attachments raise what a message costs against the usage meter.

Profiles and temporary chats

A chat can be started under a named profile, or as a temporary chat that is not kept as a saved thread. A /new URL with query parameters presets the prompt, model and search setting.

Training opt-outs

T3 Chat says it does not train its own models and has opted out of training-data collection with its providers where possible. Models that require training are labeled.

NanoGPT

• Pay As You Go$0

  Every text, image, video and voice model on web and API, billed per use from a balance topped up from $1 by card or $0.10 in crypto. One free model on the web.

• Pro$12

  per month

  60 million included input tokens a week on the subscription's text models, 100 images a day, and 5% off eligible paid text models, on web and API.

T3 Chat

Pricing could not be confirmed. See t3.chat.

NanoGPT

• Other savings

  Volume pricing for large users

  NanoGPT invites large users of its platform or API to get in touch for custom pricing and dedicated support.

T3 Chat

No public discounts listed.