Model

Claude Sonnet 4.5 (latest)

Name: Claude Sonnet 4.5 (latest)
Brand: anthropic

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

33 providers · 45 listingsreleased Sep 29, 2025knowledge cutoff 2025-07-31closed weights

$0.43

lowest input /M · QiHang

$2.14

lowest output /M · QiHang

200K

context window

64K

max output

Compare providers (sorted by listed input price)

31 of 33 providers publish a price for Claude Sonnet 4.5 (latest). The cheapest full-context option is Poe at $2.6/$13 per M — 13% below Anthropic's own price. QiHang lists lower but caps context at 200K.

			Cache read /M	Cache write /M		Capabilities
QiHang claude-sonnet-4-5-20250929	$0.43	$2.14	—	—	200K	reasoningtoolsno structuredvision	Sep 29, 2025
Poe anthropic/claude-sonnet-4.5	$2.60	$13	$0.26	$3.20	983K	reasoningtoolsno structuredvision	Sep 26, 2025
Cortecs claude-4-5-sonnet	$2.99	$14.95	$0.326	$4.08	200K	reasoningtoolsstructuredvision	Sep 29, 2025
NanoGPT claude-sonnet-4-5-20250929	$3	$15	$0.3	—	1M	reasoningtoolsstructuredvision	Sep 29, 2025
Impossibl anthropic/claude-sonnet-4-5	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredvision	Sep 29, 2025
LLM Gatewayvariant vertex-anthropic/claude-sonnet-4-5	$3	$15	$0.3	—	200K	reasoningtoolsstructuredvision	Sep 29, 2025
LLM Gatewayvariant aws-bedrock/claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Sep 29, 2025
LLM Gatewayvariant aws-bedrock/claude-sonnet-4-5	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Sep 29, 2025
LLM Gatewayvariant anthropic/claude-sonnet-4-5	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Sep 29, 2025
OrcaRouter anthropic/claude-sonnet-4.5	$3	$15	$0.3	$3.75	1M	reasoningtoolsno structuredvision	Sep 29, 2025
Azure Cognitive Services claude-sonnet-4-5	$3	$15	$0.3	$3.75	200K	reasoningtoolsstructuredvision	Nov 18, 2025
Vertex claude-sonnet-4-5@20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredvision	Sep 29, 2025
Pioneer claude-sonnet-4-5	$3	$15	$0.3	$3.75	1M	reasoningtoolsno structuredvision	Sep 29, 2025
Heliconevariant claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredno vision	Sep 29, 2025
Heliconevariant claude-4.5-sonnet	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredno vision	Sep 29, 2025
Requestyvariant claude-sonnet-4-5	$3	$15	$0.3	$3.75	1M	reasoningtoolsstructuredvision	Sep 29, 2025
Anthropic claude-sonnet-4-5	$3	$15	$0.3	$3.75	1M	reasoningtoolsstructuredvision	Sep 29, 2025
Vercel AI Gateway anthropic/claude-sonnet-4.5	$3	$15	$0.3	$3.75	1M	reasoningtoolsstructuredvision	Sep 29, 2025
DevPass (LLM Gateway)variant claude-sonnet-4-5-20250929	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredvision	Sep 29, 2025
DevPass (LLM Gateway)variant claude-sonnet-4-5	$3	$15	$0.3	$3.75	200K	reasoningtoolsno structuredvision	Sep 29, 2025

Best price history

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

Best input /M: $0.43unchanged
Best output /M: $2.14unchanged
Provider coverage: 45; 46 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

![Claude Sonnet 4.5 (latest) price](https://www.vaanalytics.in/badge/anthropic/claude-sonnet-4-5.svg)

https://www.vaanalytics.in/badge/anthropic/claude-sonnet-4-5.svg

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.

Recent changes

Changelog →

repricedvia nearai · Sep 10, 2026
- output: $15.50 → $15
contextvia cortecs · Sep 2, 2026
- output: 200K → 64K tokens
repricedvia requesty · Aug 28, 2026
- input: $2.97 → $3.30
- output: $14.85 → $16.50
- cache_read: $0.27 → $0.3
- cache_write: $3.71 → $4.13
- +1 more
contextvia orcarouter · Aug 28, 2026
- context: 200K → 1M tokens
repricedvia requesty · Aug 28, 2026
- input: $2.70 → $3
- output: $13.50 → $15
- cache_read: $0.27 → $0.3
- cache_write: $3.38 → $3.75
- +1 more
new providervia opper · Aug 23, 2026

Benchmarks

SWE-Bench Pro ↗(resolve rate)report ↗Independent43.6

Scores a lab published about its own model are claims, not measurements. Rankings elsewhere on this site use independently measured scores only.

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.