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Balanced — strong quality at a mid priceCommercial API
Claude Sonnet 4.5 Pricing
Anthropic · anthropic-claude-sonnet-4-5
Input / 1M tokens
$3.00
Output / 1M tokens
$15.00
Context window
1M tokens
≈ 1,333 pages of text
Max output
64k tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0096
1,000 requests / month$9.60/mo10,000 requests / month$96.00/mo100,000 requests / month$960.00/moEstimate your own workloadOpens the calculator with Claude Sonnet 4.5 preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Strong results on coding, structured reasoning, and long-document analysis with 1M-token context.
The business tradeoff
Elevated output-token pricing; safety tuning can produce more conservative or refusals than peer models.
Cheaper from Anthropic
Head-to-head
Vendor list rates, as of Jun 15, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.