Anthropic model product
Claude Sonnet 4.5
5 is the best coding model in the world.
Updated Aug 17, 2026. Default version: Claude Sonnet 4.5
LLMBoard Score56.6Claude Sonnet 4.5
Coverage80%8 benchmark families
Context window200KTokens
Official input price$3Anthropic API
Claude Sonnet 4.5 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Claude Sonnet 4.5 Benchmark Results
Benchmark scores for Claude Sonnet 4.5.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkSWE-bench Verified (Agentic Coding) | Score77.2% | Rank01 | Participants2 | Percentile100.0% | EvidenceC | Evaluated |
| BenchmarkTAU-bench Airline | Score70.0% | Rank01 | Participants23 | Percentile100.0% | EvidenceC | Evaluated |
| BenchmarkTAU-bench Retail | Score86.2% | Rank01 | Participants25 | Percentile100.0% | EvidenceC | Evaluated |
| BenchmarkTerminal-Bench | Score50.0% | Rank01 | Participants25 | Percentile100.0% | EvidenceC | Evaluated |
| BenchmarkMMMUval | Score77.8% | Rank03 | Participants4 | Percentile33.3% | EvidenceC | Evaluated |
| BenchmarkOSWorld | Score61.4% | Rank08 | Participants20 | Percentile63.2% | EvidenceC | Evaluated |
| BenchmarkMMMLU | Score89.1% | Rank13 | Participants49 | Percentile75.0% | EvidenceC | Evaluated |
| BenchmarkAIME 2025 | Score87.0% | Rank56 | Participants115 | Percentile51.8% | EvidenceC | Evaluated |
| BenchmarkGPQA | Score83.4% | Rank70 | Participants239 | Percentile71.0% | EvidenceC | Evaluated |
Claude Sonnet 4.5 Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenasearch factuality | Categoryoverall | Rank20 | Rating / score1161.3 | Votes105,575 | ObservationsN/A | Result date |
| Arenasearch style control | Categoryoverall | Rank21 | Rating / score1175.8 | Votes105,762 | ObservationsN/A | Result date |
| Arenadocument | Categoryoverall | Rank22 | Rating / score1446.2 | Votes28,634 | ObservationsN/A | Result date |
| Arenasearch | Categoryoverall | Rank22 | Rating / score1158.5 | Votes105,762 | ObservationsN/A | Result date |
| Arenadocument style control | Categoryoverall | Rank27 | Rating / score1446.4 | Votes28,634 | ObservationsN/A | Result date |
| Arenatext style control | Categoryoverall | Rank57 | Rating / score1454.8 | Votes80,914 | ObservationsN/A | Result date |
| Arenatext factuality | Categoryoverall | Rank58 | Rating / score1448.0 | Votes75,728 | ObservationsN/A | Result date |
| Arenatext | Categoryoverall | Rank64 | Rating / score1437.8 | Votes80,914 | ObservationsN/A | Result date |
| Arenawebdev | Categoryoverall | Rank71 | Rating / score1385.5 | Votes15,198 | ObservationsN/A | Result date |
Claude Sonnet 4.5 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $3 input, $15 output per 1M
- Official provider
- Anthropic
- Lowest third-party
- From $0.43 input, $2.14 output per 1M via QiHang
- Tracked offerings
- 39
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderQiHang | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$0.43 | Output / 1M$2.14 | Context200K | Updated |
| ProviderPoe | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$2.6 | Output / 1M$13 | Context983K | Updated |
| ProviderJiekou.AI | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$2.7 | Output / 1M$13.5 | Context200K | Updated |
| ProviderCortecs | Provider model IDclaude-4-5-sonnet | Regionglobal | Input / 1M$2.99 | Output / 1M$14.95 | Context200K | Updated |
| ProviderOrcaRouter | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderNanoGPT | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderVertex | Provider model IDclaude-sonnet-4-5@20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderImpossibl | Provider model IDanthropic/claude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderOpenRouter | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderVertex (Anthropic) | Provider model IDclaude-sonnet-4-5@20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderAnthropic | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderAnthropic | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderDatabricks | Provider model IDdatabricks-claude-sonnet-4 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderDatabricks | Provider model IDdatabricks-claude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderAmazon Bedrock | Provider model IDanthropic.claude-sonnet-4-5-20250929-v1:0 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderNEAR AI Cloud | Provider model IDanthropic/claude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15.5 | Context200K | Updated |
| ProviderMerge Gateway | Provider model IDanthropic/claude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderCloudflare AI Gateway | Provider model IDanthropic/claude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderZenMux | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderPerplexity Agent | Provider model IDanthropic/claude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderOfox | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderHelicone | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderNeon | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderAzure Cognitive Services | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| Provider302.AI | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| Provider302.AI | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderOpenCode Zen | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderRequesty | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderAzure | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderVercel AI Gateway | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderLLM Gateway | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderLLM Gateway | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderGitHub Copilot | Provider model IDclaude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderKilo Gateway | Provider model IDanthropic/claude-sonnet-4.5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderPioneer | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context1M | Updated |
| ProviderAbacus | Provider model IDclaude-sonnet-4-5-20250929 | Regionglobal | Input / 1M$3 | Output / 1M$15 | Context200K | Updated |
| ProviderVenice AI | Provider model IDclaude-sonnet-4-5 | Regionglobal | Input / 1M$3.75 | Output / 1M$18.75 | Context198K | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Claude Sonnet 4.5 Runtime Performance
Provider-specific output speed and catalog latency for Claude Sonnet 4.5. Runtime does not affect the capability score.
Sort by
Provider | Output Speed | Catalog Latency | Max Input | Max Output | Updated |
|---|
| ProviderAnthropic | Output Speed42 tok/s | Catalog Latency0.4 s | Max Input200K | Max Output64K | Updated |
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Claude Sonnet 4.5 Specifications
Technical details for the model's default version.
- Version
- Claude Sonnet 4.5
- Released
- Sep 29, 2025
- Knowledge cutoff
- Jan 31, 2025
- Parameters
- N/A
- Context window
- 200K
- Max output
- 64K
- Inputs
- audio, image, pdf, text, video
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Claude Sonnet 4.5 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionClaude Sonnet 4.5 | Released | LLMBoard56.6 | ParametersN/A | Context200K | Max output64K | Open weightsNo | LicenseProprietary |
Claude Sonnet 4.5 vs nearby models
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What is Claude Sonnet 4.5?
Key information about Claude Sonnet 4.5 and its available data.
5 is the best coding model in the world. It's the strongest model for building complex agents. It’s the best model at using computers. And it shows substantial gains in reasoning and math. Highest intelligence across most tasks with exceptional agent and coding capabilities.
Data as of 2026-08-17.
FAQ
Common questions about Claude Sonnet 4.5.
When was Claude Sonnet 4.5 released?
Claude Sonnet 4.5's default version was released on Sep 29, 2025.
How much does Claude Sonnet 4.5 cost?
Claude Sonnet 4.5's official API price is $3 per million input tokens and $15 per million output tokens via Anthropic. The lowest tracked third-party offer starts at $0.43 input and $2.14 output via QiHang.
Who created Claude Sonnet 4.5?
Claude Sonnet 4.5 was created by Anthropic.
What is the context window for Claude Sonnet 4.5?
The default version has a 200K token context window.
Is Claude Sonnet 4.5 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Claude Sonnet 4.5?
39 provider offerings are linked to the default version.
What models should I compare Claude Sonnet 4.5 with?
Nearby ranked alternatives include DeepSeek-V3.2, Solar Pro 4, Qwen3.5 27B.