Claude Sonnet 4.5

anthropic/claude-sonnet-4-5

Maker: Anthropic, United States
Released: 2025-09-29
Knowledge cutoff: 2025-07-31
Family: claude-sonnet
Weights: closed
Tasks: text.chat, text.reasoning, code, vision.understand, vision.extract
Cheapest offering: Anthropic, about $0.0075 for a typical text.chat call

Try it in the sandbox Use it from the API

Offerings

Provider	Model id at the provider	Status	Price per 1M tokens	Per-unit prices	Limits	Capabilities (level)
Anthropic	`claude-sonnet-4-5`	gadeprecated 2026-11-30	Input: $3 Output: $15 Cache read: $0.30 Cache write (5 min): $3.75 Cache write (1 h): $6 Since 2026-11-03 · Curated by Nanner Tech	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Anthropic	`claude-sonnet-4-5-20250929`	gadeprecated 2026-11-30	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `web_search` claimed `computer_use` claimed
Azure OpenAI	`claude-sonnet-4-5`	ga	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-04 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed
Amazon Bedrock	`anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Amazon Bedrock	`au.anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3.3 Output: $16.5 Cache read: $0.33 Cache write (5 min): $4.125 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Amazon Bedrock	`eu.anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3.3 Output: $16.5 Cache read: $0.33 Cache write (5 min): $4.125 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Amazon Bedrock	`global.anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Amazon Bedrock	`jp.anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3.3 Output: $16.5 Cache read: $0.33 Cache write (5 min): $4.125 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
Amazon Bedrock	`us.anthropic.claude-sonnet-4-5-20250929-v1:0`	deprecateddeprecated 2027-04-08	Input: $3.3 Output: $16.5 Cache read: $0.33 Cache write (5 min): $4.125 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed `tool_choice` claimed `prompt_caching` claimed `computer_use` claimed
OpenRouter	`anthropic/claude-sonnet-4.5`	ga	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Input, prompts over 200,000 tokens: $6 Output, prompts over 200,000 tokens: $22.5 Cache read, prompts over 200,000 tokens: $0.6 Cache write (5 min), prompts over 200,000 tokens: $7.5 Since 2026-11-03 · models.dev, MIT	none	Context: 1,000,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed
Claude on Vertex AI	`claude-sonnet-4-5@20250929`	deprecated	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed
Google Vertex AI	`claude-sonnet-4-5@20250929`	deprecated	Input: $3 Output: $15 Cache read: $0.3 Cache write (5 min): $3.75 Since 2026-11-03 · models.dev, MIT	none	Context: 200,000 tokens Max output: 64,000 tokens	`input.text` claimed `input.image` claimed `input.pdf` claimed `output.text` claimed `tools` claimed `structured_output` claimed `reasoning` claimed

Quality scores

Basis	Score (0–1)	Raw	Measured	Source
`lmarena:document_style_control`	0.858	1449.0763	2026-09-13	LMArena, CC-BY-4.0, normalized by Nanner Tech
`epoch:gpqa_diamond`	0.854	0.8232	2025-10-28	Epoch AI, CC-BY-4.0, normalized by Nanner Tech
`epoch:swe_bench_verified`	0.854	0.7128	2026-02-05	Epoch AI, CC-BY-4.0, normalized by Nanner Tech
`epoch:terminal_bench`	0.549	0.4652	2025-09-29	Epoch AI, CC-BY-4.0, normalized by Nanner Tech
`epoch:frontiermath`	0.255	0.2386	2026-06-11	Epoch AI, CC-BY-4.0, normalized by Nanner Tech
`epoch:hle`	0.250	0.1372	2025-09-29	Epoch AI, CC-BY-4.0, normalized by Nanner Tech

Aliases

Other names the API accepts for this model.

anthropic.claude-sonnet-4-5-20250929-v1:0
anthropic/claude-sonnet-4.5
au.anthropic.claude-sonnet-4-5-20250929-v1:0
claude-sonnet-4-5
claude-sonnet-4-5-20250929
claude-sonnet-4-5@20250929
eu.anthropic.claude-sonnet-4-5-20250929-v1:0
global.anthropic.claude-sonnet-4-5-20250929-v1:0
jp.anthropic.claude-sonnet-4-5-20250929-v1:0
us.anthropic.claude-sonnet-4-5-20250929-v1:0

Use it from the API

Look this model up, or ask for the best model for its task on the providers that offer it. See the quickstart and the API reference.

Look up this model

curl 'https://rhumbdata.com/v1/models/anthropic/claude-sonnet-4-5' \
  -H "Authorization: Bearer $RHUMB_KEY"

Resolve text.chat on its providers

curl 'https://rhumbdata.com/v1/resolve?task=text.chat&providers=anthropic,azure-openai,bedrock,openrouter,vertex-anthropic,vertex' \
  -H "Authorization: Bearer $RHUMB_KEY"

Built from catalog version 2026-11-04.3 of 2026-11-04. Prices are list prices per 1M tokens unless marked otherwise; every score shows its source's notice (see Attributions).