Claude Sonnet 4.5 without a subscription
Sonnet 4.5: a proven last-generation model for writing and code.
- Maker
- Anthropic, USA
- Family
- Claude, older version
- Official price per 1M tokens
- $3 your text, $15 answer
- On Freepay
- 10x cheaper, no subscription
What Claude Sonnet 4.5 can do
Claude is made by Anthropic, a US company. People pick it for natural writing, strong code and the way it handles long documents.
This is not the newest version. For new work see Claude Sonnet 5.5: claude’s everyday model. Natural writing and good code, the best value of the line.
Good for:
- Natural posts, articles and emails
- Code and debugging
- Long documents and contracts
- Editing and summaries
How to use Claude Sonnet 4.5 without a subscription
On claude.ai you need an account and a phone number, the free plan has tight message limits, and Claude Pro is a monthly subscription. On Freepay Claude Sonnet 4.5 works right in the browser: no subscription and no account at the maker.
- Buy a Freepay key on FunPay. It arrives right after payment.
- Click “Sign in with key” and paste the key.
- Pick Claude Sonnet 4.5 in the input field and ask your question.
How much Claude Sonnet 4.5 costs
| Option | Price |
|---|---|
| Subscription at Anthropic | Claude Pro costs about $20 a month. |
| Claude Sonnet 4.5 at Anthropic | $3 per 1M tokens of your text, $15 per 1M tokens of the answer |
| Claude Sonnet 4.5 on Freepay | 10x cheaper, no subscription. Charges ×1.5 for your text and ×7.5 for the answer |
AI models count text in tokens, small pieces of words. A Freepay key costs from $0.18 per 1M balance tokens, and every model charges its own share: strong ones more, cheap ones less. Claude Sonnet 5.5 is ×1. Every model’s price is on the Pricing page.
Claude Sonnet 4.5 and other Claude models
| Model | Type | Official, $ per 1M | Freepay rate |
|---|---|---|---|
| Claude Fable 5.2 | the strongest | $8 / $40 | ×4 / ×20 |
| Claude Fable 5.1 | older version | $10 / $50 | ×5 / ×25 |
| Claude Fable 5 | older version | $10 / $50 | ×5 / ×25 |
| Claude Opus 5.5 | flagship | $4 / $20 | ×2 / ×10 |
| Claude Opus 5 | older version | $5 / $25 | ×2.5 / ×12.5 |
| Claude Opus 4.8 | older version | $5 / $25 | ×2.5 / ×12.5 |
| Claude Opus 4.7 | older version | $5 / $25 | ×2.5 / ×12.5 |
| Claude Opus 4.6 | older version | $5 / $25 | ×2.5 / ×12.5 |
| Claude Opus 4.5 | older version | $5 / $25 | ×2.5 / ×12.5 |
| Claude Sonnet 5.5 | everyday | $2 / $10 | ×1 / ×5 |
| Claude Sonnet 5 | older version | $2 / $10 | ×1 / ×5 |
| Claude Sonnet 4.6 | older version | $3 / $15 | ×1.5 / ×7.5 |
| Claude Sonnet 4.5 | older version | $3 / $15 | ×1.5 / ×7.5 |
| Claude Haiku 5.5 | fast and cheap | $0.1 / $0.5 | ×0.05 / ×0.25 |
| Claude Haiku 4.5 | older version | $1 / $5 | ×0.5 / ×2.5 |
Prices: your text / answer. You switch models right in the chat, and the balance is shared.
Similar models from other makers
- Gemini 4 Argon by Google: the strongest Gemini. For large documents, analysis and hard questions.
- GPT-6.1 Sol by OpenAI: chatGPT’s everyday model. Answers any question, writes text and code.
- Grok 4.7 by xAI: the newest Grok: straight answers, reasoning and analysis.
- Qwen3 Max by Alibaba Cloud: the strongest Qwen: general questions, writing and translation.
Frequently asked questions
How do I use Claude Sonnet 4.5 without a subscription?
Buy a Freepay key on FunPay, click “Sign in with key”, paste the key and pick Claude Sonnet 4.5 in the input field. You pay only for what you ask.
How much does Claude Sonnet 4.5 cost?
Anthropic’s official price is $3 per 1M tokens of your text and $15 per 1M tokens of the answer. On Freepay it is 10x cheaper with no subscription: a key costs from $0.18 per 1M balance tokens, and Claude Sonnet 4.5 charges ×1.5 for your text and ×7.5 for the answer.
Can I use Claude Sonnet 4.5 for free?
Claude Sonnet 4.5 works with a key. For free you can ask our KLINCH AI model in the free chat, with no sign-up and no key.
Does Claude Sonnet 4.5 answer in my language?
Yes. Write in your language and Claude Sonnet 4.5 answers in it.
Do I need an account at Anthropic?
No. On claude.ai you need an account and a phone number, the free plan has tight message limits, and Claude Pro is a monthly subscription. On Freepay you only need a key.