Scheduled for retirement on Apr 8, 2027. Still available at the prices below until then.
Context
200K
Max output
64K
Serving providers
3
Cheapest input
$3.00 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.
Benchmarks
independent evaluations · source: ARC PrizeIndividual benchmarks · click a row for effort variants
| Benchmark | Best score | Effort | Cost / task | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ARC-AGI-2 | 14% | reasoning: true · thinking_budget: 32000 | $0.759 | |||||||||||||||||||||||||
| ||||||||||||||||||||||||||||
Pricing by serving provider
standard tier · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AnthropicCheapest | $3.00 | $15.00 | 1 | |||||||||||||||||||||
Standardclaude-sonnet-4-5-20250929
| ||||||||||||||||||||||||
| Amazon Bedrock | $3.00 | $15.00 | 1 | |||||||||||||||||||||
Standardanthropic.claude-sonnet-4-5-20250929-v1:0
| ||||||||||||||||||||||||
| Vertex AI Anthropic Models | $3.00 | $15.00 | 1 | |||||||||||||||||||||
Standardvertex_ai/claude-sonnet-4-5@20250929
| ||||||||||||||||||||||||
Price history
listed seller prices, input and output per 1M tokens Input Output
Cost calculator
estimate your monthly spend on this model$1,800
estimated / month
Model IDs
copy the exact identifier for your platformvertex_ai/claude-sonnet-4-5@20250929anthropic.claude-sonnet-4-5-20250929-v1:0claude-sonnet-4-5-20250929
Frequently asked questions
Claude Sonnet 4.5 (2025-09-29) pricing, context and availabilityIs Claude Sonnet 4.5 (2025-09-29) still available?
Yes. Claude Sonnet 4.5 (2025-09-29) is scheduled for retirement on 2027-04-08.
How much does Claude Sonnet 4.5 (2025-09-29) cost?
Claude Sonnet 4.5 (2025-09-29) costs $3.00 per 1M input tokens from Anthropic, and $15.00 per 1M output tokens from Anthropic.
What is the context window of Claude Sonnet 4.5 (2025-09-29)?
Claude Sonnet 4.5 (2025-09-29) accepts up to 200K tokens of context and can return up to 64K output tokens.
Which providers serve Claude Sonnet 4.5 (2025-09-29)?
Claude Sonnet 4.5 (2025-09-29) is available from 3 serving providers, each with its own pricing and model ID. Anthropic is currently the cheapest.
What can Claude Sonnet 4.5 (2025-09-29) do?
Claude Sonnet 4.5 (2025-09-29) supports image input (vision), tool use, reasoning, prompt caching, structured output and web search.
Other Anthropic models
compare pricing across the Anthropic lineupClaude Haiku 4.5$1.00/1M · 11 providersClaude Sonnet 5$2.00/1M · 9 providersClaude Sonnet 4.6$3.00/1M · 9 providersClaude Opus 5$5.00/1M · 9 providersClaude Fable 5$10.00/1M · 9 providersClaude Sonnet 4.5$3.00/1M · 8 providersClaude Opus 4.7$5.00/1M · 8 providersClaude Opus 4.8$5.00/1M · 8 providers
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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