1zero Browser
1zero AI
Any model in 1zero Browser's AI chat, without installing an agent. A plan with usage included, and top-ups when you need more. What you send goes to the model's provider with zero data retention, and we never keep it.
Plans
Free
$0
$1.00 of usage, once
A one-time trial with fast, inexpensive models. Needs a verified email.
Plus
$10 / month
$8.00 of usage each month
The everyday models, with usage included each month.
Pro
$25 / month
$20.00 of usage each month
Every model, the most capable ones included, with more usage.
Top-ups
More usage on any plan, at the same prices. A top-up lasts a year and is used after your plan's monthly usage.
Models and prices
Per million tokens. A short question is a few thousand tokens; a task that reads pages and takes screenshots can be a few hundred thousand.
| Model | Plan | Input | Cached input | Output |
|---|---|---|---|---|
| Claude Haiku 5.5Anthropic | Free and up | $0.11 | $0.011 | $0.55 |
| GPT-5.6 LunaOpenAI | Free and up | $0.22 | $0.022 | $1.32 |
| Fast mode | Same plan | $0.44 | $0.044 | $2.64 |
| DeepSeek V4.1 FlashDeepSeek | Free and up | $0.33 | $0.0077 | $1.32 |
| Gemini 3.8 FlashGoogle | Free and up | $0.82 | $0.083 | $4.13 |
| Claude Sonnet 5.5Anthropic | Plus and up | $2.2 | $0.11 | $11 |
| GPT-5.6 TerraOpenAI | Plus and up | $2.2 | $0.22 | $13.2 |
| Fast mode | Same plan | $4.4 | $0.44 | $26.4 |
| Gemini 4 ArgonGoogle | Plus and up | $2.2 | $0.11 | $11 |
| Claude Opus 5.5Anthropic | Pro | $4.4 | $0.22 | $22 |
| Fast mode | Same plan | $8.8 | $0.44 | $44 |
| GPT-5.6 SolOpenAI | Pro | $4.4 | $0.44 | $22 |
| Fast mode | Same plan | $8.8 | $0.88 | $44 |