Anthropic: Claude Sonnet 4.5
Released Sep 29, 2025Try it on:
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Best overall rank
#41
▼ 1 vs 7d ago
Total arena votes
1,154,675
Across 66 (subset, category) entries
Providers on OR
8
Amazon Bedrock + others
First seen
2026-05-08
61 days tracked
Trend
Pricing
Per token
- Input (per 1M)
- $3.00
- Output (per 1M)
- $15.00
- Cache Read (per 1M)
- $0.300
- Cache Write (per 1M)
- $3.75
Per unit
- Web search
- $0.010/call
Capabilities
Modality
text+image+file->textContext
1M tokens
Tokenizer
Claude
Knowledge cutoff
2025-01-31
Max output
64K tokens
Moderation
Moderated
Supported parameters
include_reasoning
max_completion_tokens
max_tokens
reasoning
response_format
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p
Providers
| Provider | Region / Tag | Context | Input/M | Output/M | Uptime 1d | Latency | Quant | Cache |
|---|---|---|---|---|---|---|---|---|
| Amazon Bedrock | amazon-bedrock/eu-west-1 | 1M | $3.00 | $15.00 | 100.00% | - | - | - |
google-vertex/global | 1M | $3.00 | $15.00 | 99.97% | - | - | - | |
google-vertex/us-east5 | 1M | $3.00 | $15.00 | 99.93% | - | - | - | |
| Amazon Bedrock | amazon-bedrock | 1M | $3.00 | $15.00 | 99.88% | - | - | - |
| Anthropic | anthropic | 1M | $3.00 | $15.00 | 99.44% | - | - | - |
| Amazon Bedrock | anthropic/claude-on-aws | 1M | $3.00 | $15.00 | 84.00% | - | - | - |
| Anthropic | anthropic/2 | 1M | $3.00 | $15.00 | 69.58% | - | - | - |
| Azure | azure/us-east-2 | 200K | $3.00 | $15.00 | - | - | - | - |
Per-category ranks
Text
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #16 | Coding | thinking-32k | 1520 | 19,302 | |
| #17 | Longer Query | thinking-32k | 1486 | 24,555 | |
| #18 | Creative Writing | - | 1454 | 12,065 | |
| #19 | Hard Prompts English | thinking-32k | 1498 | 23,080 | |
| #20 | Longer Query | - | 1484 | 24,976 | |
| #21 | Instruction Following | thinking-32k | 1465 | 23,626 | |
| #22 | Expert | thinking-32k | 1500 | 5,472 | |
| #22 | Instruction Following | - | 1463 | 23,309 | |
| #23 | Industry Entertainment And Sports And Media | thinking-32k | 1443 | 15,692 | |
| #24 | Creative Writing | thinking-32k | 1447 | 12,341 | |
| #25 | Coding | - | 1514 | 19,157 | |
| #25 | Industry Writing And Literature And Language | - | 1454 | 18,417 | |
| #26 | Hard Prompts English | - | 1491 | 23,360 | |
| #26 | Industry Entertainment And Sports And Media | - | 1443 | 15,304 | |
| #26 | Multi Turn | - | 1479 | 14,156 | |
| #27 | Spanish | - | 1464 | 2,168 | |
| #29 | Hard Prompts | thinking-32k | 1487 | 46,893 | |
| #29 | Industry Business And Management And Financial Operations | - | 1461 | 15,372 | |
| #30 | English | thinking-32k | 1472 | 38,941 | |
| #30 | Industry Software And It Services | thinking-32k | 1500 | 29,965 | |
| #31 | Industry Mathematical | thinking-32k | 1471 | 3,913 | |
| #32 | Industry Writing And Literature And Language | thinking-32k | 1451 | 18,793 | |
| #34 | Expert | - | 1486 | 5,573 | |
| #34 | Korean | - | 1415 | 1,254 | |
| #35 | German | thinking-32k | 1456 | 1,300 | |
| #35 | Hard Prompts | - | 1483 | 46,567 | |
| #35 | Industry Software And It Services | - | 1498 | 29,709 | |
| #37 | English | - | 1469 | 38,619 | |
| #37 | French | - | 1478 | 1,830 | |
| #37 | Industry Business And Management And Financial Operations | thinking-32k | 1458 | 15,615 | |
| #38 | Math | thinking-32k | 1455 | 4,911 | |
| #38 | Multi Turn | thinking-32k | 1470 | 14,068 | |
| #39 | Polish | thinking-32k | 1458 | 2,164 | |
| #41 | Exclude Ties | - | 1459 | 59,205 | |
| #41 | Overall | thinking-32k | 1455 | 82,456 | |
| #41 | Spanish | thinking-32k | 1454 | 2,279 | |
| #42 | Exclude Ties | thinking-32k | 1459 | 60,649 | |
| #42 | French | thinking-32k | 1476 | 1,875 | |
| #42 | Industry Life And Physical And Social Science | - | 1473 | 13,093 | |
| #42 | Overall | - | 1455 | 80,895 | |
| #42 | Russian | - | 1453 | 7,927 | |
| #43 | Industry Legal And Government | - | 1464 | 5,773 | |
| #46 | Industry Legal And Government | thinking-32k | 1462 | 5,699 | |
| #46 | Russian | thinking-32k | 1449 | 7,913 | |
| #48 | Chinese | thinking-32k | 1489 | 3,870 | |
| #48 | Non English | - | 1439 | 42,226 | |
| #49 | German | - | 1444 | 1,300 | |
| #49 | Industry Life And Physical And Social Science | thinking-32k | 1469 | 13,150 | |
| #49 | Industry Mathematical | - | 1453 | 3,987 | |
| #49 | Industry Medicine And Healthcare | - | 1473 | 5,144 | |
| #50 | Japanese | - | 1409 | 681 | |
| #51 | Industry Medicine And Healthcare | thinking-32k | 1471 | 5,187 | |
| #52 | Non English | thinking-32k | 1435 | 43,466 | |
| #55 | Japanese | thinking-32k | 1406 | 703 | |
| #57 | Korean | thinking-32k | 1392 | 1,285 | |
| #61 | Chinese | - | 1481 | 3,873 | |
| #61 | Polish | - | 1438 | 2,208 | |
| #75 | Math | - | 1428 | 4,918 |
WebDev
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #44 | Webdev-react | - | 1386 | 5,431 | |
| #45 | Webdev-react | thinking-32k | 1382 | 4,424 | |
| #48 | Overall | thinking-32k | 1388 | 15,749 | |
| #48 | Webdev | thinking-32k | 1388 | 15,749 | |
| #50 | Overall | - | 1386 | 18,414 | |
| #50 | Webdev | - | 1386 | 18,414 | |
| #50 | Webdev-html | thinking-32k | 1396 | 11,313 | |
| #52 | Webdev-html | - | 1386 | 12,952 |