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Claude Sonnet 4.5

anthropic/claude-sonnet-4-5-20250929

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

Input modalitiesT
Output modalitiesT
Source-linkedclaude-sonnetClosed weightsReleased 2025-09-29
Report data
Context window200K
Maximum output64K
Provider offers16
Knowledge cutoff2025-07-31
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputNo
AttachmentsYes
Temperature controlYes
Open weightsNo
Creator
Anthropic
Family
claude-sonnet
Modalities
Image, Pdf, Text
License
Not documented
Release date
2025-09-29
Model ID
anthropic/claude-sonnet-4-5-20250929
Market availability

Provider pricing

Report price →
Providers offering Claude Sonnet 4.5
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
QiHang logoQiHangclaude-sonnet-4-5-20250929200K$0.43 if offer.cost.input is defined else '—'}}$2.14 if offer.cost.output is defined else '—'}}$0 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "input": 0.43,
  "output": 2.14
}
OpenCode Zen logoOpenCode Zenclaude-sonnet-4-51M$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "context_over_200k": {
    "cache_read": 0.6,
    "cache_write": 7.5,
    "input": 6,
    "output": 22.5
  },
  "input": 3,
  "output": 15,
  "tiers": [
    {
      "cache_read": 0.6,
      "cache_write": 7.5,
      "input": 6,
      "output": 22.5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Vertex (Anthropic) logoVertex (Anthropic)claude-sonnet-4-5@20250929200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Anthropic logoAnthropicclaude-sonnet-4-5-202509291M$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Vertex logoVertexclaude-sonnet-4-5@20250929200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
LLM Gateway logoLLM Gatewayclaude-sonnet-4-5-20250929200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Neon logoNeonclaude-sonnet-4200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Azure logoAzureclaude-sonnet-4-5200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Merge Gateway logoMerge Gatewayanthropic/claude-sonnet-4-5-20250929200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Vercel AI Gateway logoVercel AI Gatewayanthropic/claude-sonnet-4.51M$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
DigitalOcean logoDigitalOceananthropic-claude-4.5-sonnet1M$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "context_over_200k": {
    "cache_read": 0.3,
    "cache_write": 3.75,
    "input": 6,
    "output": 22.5
  },
  "input": 3,
  "output": 15,
  "tiers": [
    {
      "cache_read": 0.3,
      "cache_write": 3.75,
      "input": 6,
      "output": 22.5,
      "tier": {
        "size": 200000,
        "type": "context"
      }
    }
  ]
}
Amazon Bedrock logoAmazon Bedrockanthropic.claude-sonnet-4-5-20250929-v1:0200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Databricks logoDatabricksdatabricks-claude-sonnet-4200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Azure Cognitive Services logoAzure Cognitive Servicesclaude-sonnet-4-5200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0.3 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.3,
  "cache_write": 3.75,
  "input": 3,
  "output": 15
}
Abacus logoAbacusclaude-sonnet-4-5-20250929200K$3 if offer.cost.input is defined else '—'}}$15 if offer.cost.output is defined else '—'}}$0 if offer.cost.cache_read is defined else '—'}}R T ·
View
{
  "input": 3,
  "output": 15
}
Venice AI logoVenice AIclaude-sonnet-4-5198K$3.75 if offer.cost.input is defined else '—'}}$18.75 if offer.cost.output is defined else '—'}}$0.375 if offer.cost.cache_read is defined else '—'}}R T S
View
{
  "cache_read": 0.375,
  "cache_write": 4.69,
  "input": 3.75,
  "output": 18.75
}
Evidence

Published benchmark results

Insufficient benchmark coverage. ModelBench does not infer a score from price, context size, or model name.