Home Chat with free AI Anthropic: Claude Sonnet 4.5
Anthropic Premium · $18/month 77 tokens / message Balanced

Anthropic: Claude Sonnet 4.5 · Anthropic

Claude Sonnet 4.5 is Anthropic's most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with enhanced capabilities for complex development tasks.

Superior coding performance Real-world agent optimization 1M token context

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About Anthropic: Claude Sonnet 4.5

Claude Sonnet 4.5 is Anthropic's most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with enhanced capabilities for complex development tasks.

Where it shines: Superior coding performance · Real-world agent optimization · 1M token context.

How to use Anthropic: Claude Sonnet 4.5

  1. 1

    Type or upload

    Type what you want in the box above — or upload the file if the tool asks for one.

  2. 2

    Generate

    Click the main button. Wait 2-30 seconds depending on the model and input size.

  3. 3

    Download or share

    Download the result or share the direct link. No watermark, ready to use.

Frequently asked questions

How much does it cost to use Anthropic: Claude Sonnet 4.5?

Anthropic: Claude Sonnet 4.5 is Premium: costs 77 tokens per use (~$0.39 actual cost to provider). Requires Premium plan ($29/month → 60,000 tokens) or large one-shot packs. Intended for occasional professional use; Pro plan does not unlock Premium models.

How many uses of Anthropic: Claude Sonnet 4.5 are included in the Premium plan?

Premium ($29/month) gives you 60,000 recurring tokens. At 77 tokens per use of Anthropic: Claude Sonnet 4.5, that’s ~779 full uses per cycle. For sporadic use, one-shot packs can be more cost-effective — they last up to a year from purchase.

What makes Anthropic: Claude Sonnet 4.5 special?

Anthropic trains its models for honesty and nuanced reasoning — they admit when they don’t know something rather than inventing. Its specific strengths are: superior coding performance, optimized for real agents, and context of 1m tokens. It accepts images as input (multimodal) as well as text — useful for describing captures, reading graphs, or solving problems from a photo.

How fast does Anthropic: Claude Sonnet 4.5 respond?

Anthropic: Claude Sonnet 4.5 has a balanced speed: 5-15 seconds per response — neither the fastest nor the slowest in the catalog. The actual time also depends on the length of the prompt and the load of the datacenter — models with huge context take longer when you enter very long texts.

How do I use Anthropic: Claude Sonnet 4.5 in ia.gratis?

You can use Anthropic: Claude Sonnet 4.5 from /chat/ by selecting Anthropic: Claude Sonnet 4.5 in the picker, or via the REST API with `model=claude-sonnet-4-5` in the POST body. Quick summary: claude Sonnet 4.5: Anthropic's advanced model for agents and code flows. The internal model identifier is `claude-sonnet-4-5` — useful when integrating via API.