Last refreshed 2026-05-15. Next refresh: weekly.
Why use Claude Sonnet 4 on Anthropic?
Anthropic offers Claude Sonnet 4 with pay-as-you-go pricing at $3.00/1M input tokens. Anthropic is a safety-focused AI research company and creator of the Claude model family, offering API access through the Anthropic Console for text generation, analysis, and coding tasks.
Compare Claude Sonnet 4 across 3 providers to find the best fit for your use caseSetup recipe
Python + curlpip install anthropicexport ANTHROPIC_API_KEY=...import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-sonnet-4",claude-sonnet-4Request example
import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-sonnet-4",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)Gotchas
- Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".
- The examples expect ANTHROPIC_API_KEY; rename it only if your application config maps the new variable.
Compare Claude Sonnet 4 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $3.00 | $15.00 |
| AWS Bedrock | $8.00 | $40.00 |
| OpenRouter | $3.00 | $15.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $3.00 |
| Output tokens | $15.00 |
Capabilities
About Claude Sonnet 4
Claude Sonnet 4 API snapshot with expanded 1M-token context. Anthropic lists claude-sonnet-4-20250514 as deprecated April 14, 2026 with Claude API retirement scheduled for June 15, 2026; use Claude Sonnet 4.6 for current integrations.
FAQ
What does Claude Sonnet 4 cost on Anthropic?
On Anthropic, Claude Sonnet 4 costs $3 per 1M input tokens and $15 per 1M output tokens.
What is the context window for Claude Sonnet 4 on Anthropic?
Claude Sonnet 4 supports a 1,000,000 token context window on Anthropic.
How does Anthropic compare to other Claude Sonnet 4 providers?
Claude Sonnet 4 is available from 3 providers. The cheapest input pricing is $3/1M tokens from Anthropic.
Who created Claude Sonnet 4?
Claude Sonnet 4 was created by Anthropic as part of the Claude 4 model family.
Is Claude Sonnet 4 open source?
Claude Sonnet 4 is not open source; the seed data lists it as proprietary.