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#334

Claude Sonnet 5

Anthropic Release: 2026-06-30 Tested on: 2026-10-01 01:40 anthropic/claude-sonnet-5::none
~1T total (~100B active)MoEClosedEstimated
(medium) (none)

Summary

Claude Sonnet 5 scores 5.9 on AI BENCHY and ranks #334. It has 10.0 reliability, a 40.6% pass rate, $1.095 total cost, and 8.60s average response time.

What makes Claude Sonnet 5 unique: It stands out most in Combined, where it ranks #1, while Coding is its weakest area at #17.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~1T total (~100B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Vendor does not disclose parameter counts.

Parameter source Availability source

Score

5.9

Consistency

8.4

Reliability

10.0

Total Cost (Current Price)

$1.095

Total Output Tokens

30,777

Total Input Tokens

393,560

Input Price

$2.000 / 1M

Output Price

$10.000 / 1M

Cache Read Price

$0.200 / 1M

Cache Write Price

$2.500 / 1M

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 16

Attempt pass rate: 40.6%

Flaky tests

5

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

8.60s

Response Time (max): 64.73s

Response Time (total): 197.73s

Wrong answer: 9 Extra formatting: 4 No answer: 2 Did not follow instructions: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#334 Claude Sonnet 5

none
Cost
$0.061
Time
53.7s
Tokens
6,172 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-10-01 01:40 Re-test 5.9 10.0 $1.095 Current run
2026-07-16 22:32 New test added 6.3 10.0 $0.548 Compare
2026-06-30 21:33 Initial run 5.7 10.0 $0.287 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-08-14 12:51 $2.000 / 1M $10.000 / 1M N/A N/A
2026-10-01 18:33 $2.000 / 1M $10.000 / 1M $0.200 / 1M $2.500 / 1M

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 4.7 3.1
Anti-AI Tricks 5.3 10.0
Coding 4.6 7.9
Combined 6.5 10.0
Data parsing and extraction 10.0 10.0
Domain specific 2.9 7.2
General Intelligence 4.7 3.1
Instructions following 6.4 10.0
Puzzle Solving 6.0 7.4
Tool Calling 10.0 10.0
Trivia 3.0 10.0

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