Model

Claude Sonnet 4.5

Name: Claude Sonnet 4.5
Brand: anthropic

Balanced Claude model for coding, analysis, agent workflows, and cost control

5 providers · 5 listingsreleased Sep 29, 2025knowledge cutoff 2025-07-31closed weights

$2.70

lowest input /M · Jiekou.AI

$13.50

lowest output /M · Jiekou.AI

200K

context window

64K

max output

Compare providers (sorted by listed input price)

5 providers list Claude Sonnet 4.5. The cheapest full-context option is Jiekou.AI at $2.7/$13.5 per M — 4% below Anthropic's own price.

			Cache read /M	Cache write /M		Capabilities
Jiekou.AI claude-sonnet-4-5-20250929	$2.70	$13.50	—	—	200K	no reasoningtoolsstructuredvision	Jan 1, 2026
LLM Gateway anthropic/claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Sep 29, 2025
Anthropic claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	1M	reasoningtoolsstructuredvision	Sep 29, 2025
Merge Gateway anthropic/claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Sep 29, 2025
302.AI claude-sonnet-4-5-20250929	$3	$15	—	—	200K	reasoningtoolsno structuredvision	Sep 30, 2025

Best price history

Daily lowest published price across live providers. A lower line is better for the buyer.

Best input /M: $2.70unchanged
Best output /M: $13.50unchanged
Provider coverage: 5; 5 at the start · 24 snapshots

Published best prices are unchanged.

24 daily snapshots collected from Aug 21, 2026 through Sep 14, 2026. A price chart will appear after the first real move.

Price badge

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Live SVG, regenerated on every hourly sync — paste it into a README to always show the current cheapest listed price. Updates when prices change; no build step needed on your side.

Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.