Claude Sonnet 5 API model profile

Evidence snapshot: 2026-08-12

Claude Sonnet 5 is a Anthropic model profile with a 1,000,000-token context window. The dated catalog snapshot records text, image, file modalities and interfaces for agentic, coding, file input, prompt caching, reasoning.

Claude Sonnet 5 is available under the Kendr alias kc-claude-sonnet-5. Current account availability and customer credit quotes come from Kendr's live public model API and applicable account policy.

Claude Sonnet 5 accepts text, image, and file and returns text. The snapshot records agentic, coding, file input, prompt caching, reasoning, reasoning controls, structured output, text generation, tool calling, tools, vision, web search, and web search pricing as capabilities or interfaces.

Claude Sonnet 5 ranked #15 in the cited trailing-7-day third-party catalog usage dataset as of 2026-08-12. Observed within the cited trailing-7-day third-party catalog usage dataset; this is not global AI market share.

Profile data was reviewed for the 2026-08-12 snapshot. Claims retain their source dates, and unavailable fields are shown as unavailable instead of estimated.

Profile facts

Profile type: Kendr API model
Kendr API alias: kc-claude-sonnet-5
Model developer: Anthropic
Kendr route provider: Anthropic
Context window: 1M
Snapshot date: 2026-08-12
Reference catalog ID: anthropic/claude-sonnet-5

Context, modalities, and identity

Model developer: Anthropic
Kendr route provider: Anthropic
Context window: 1M
Maximum output: 128,000 tokens
Input modalities: text, image, and file
Output modalities: text
Knowledge cutoff: Not disclosed

Capabilities and supported controls

Capabilities and parameters are reported from the dated catalog and source records; their presence does not guarantee identical behavior across every provider route.

Supported parameters: include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, tool_choice, tools, verbosity

agentic
coding
file input
prompt caching
reasoning
reasoning controls
structured output
text generation
tool calling
tools
vision
web search
web search pricing

Dated pricing snapshot

Reference figures are dated 2026-08-12; the live Kendr quote can differ by selected provider route, context tier, caching, tools, region, and current rate card.

Price date: 2026-08-12
Input: $2 per 1M tokens
Cached input: $0.2 per 1M tokens
Output: $10 per 1M tokens

Benchmark evidence and limitations

Third-party catalog fields normalized from the cited model dataset; benchmark methodology and coverage differ by source.

Intelligence Index: 55.3
Coding Index: 71.5
Agentic Index: 49.7

Design Arena category	Elo	Win rate	Rank
agenticgamedev	1235	55.7%	#4
androidnative	1253	57.2%	#6
fullstack	1268	58.9%	#5
godotgamedev	1268	60.3%	#4
htmlslides	1240	54.8%	#4
mobileapps	1236	52.9%	#9
python-pptxslides	1252	55.9%	#6
webapps	1294	58.3%	#3
3d	1306	56%	#15
asciiart	1248	52.7%	#13
codecategories	1299	54.8%	#14
dataviz	1264	52.5%	#24
gamedev	1337	55.9%	#4
svg	1237	53.5%	#16
uicomponent	1310	54.9%	#11
website	1295	55%	#12

Popularity and market context

Third-party catalog rank: #15
Global market share: Not inferred
Observation date: 2026-08-12

OpenAI-compatible API example

This example applies to the published Kendr alias on this hosted profile. Check the live public catalog before use.

curl https://api.kendr.org/v1/chat/completions \
  -H "Authorization: Bearer $KENDR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kc-claude-sonnet-5","messages":[{"role":"user","content":"Hello"}]}'

Frequently asked questions

What is Claude Sonnet 5?

What context window does Claude Sonnet 5 have?

The dated profile lists 1M of context and up to 128,000 output tokens. Provider routes, variants, and runtime configuration can impose lower effective limits.

What benchmark evidence is available for Claude Sonnet 5?

The 2026-08-12 snapshot includes 3 Artificial Analysis indexes and 16 Design Arena categories. Publisher-reported launch results are labeled and are not presented as Kendr measurements; scores from different suites are not treated as interchangeable. Third-party catalog fields normalized from the cited model dataset; benchmark methodology and coverage differ by source.

What is the Kendr API alias for Claude Sonnet 5?

Use kc-claude-sonnet-5 as the model value. The live public model API and signed-in catalog remain authoritative for route availability and customer credit quotes.

How is Claude Sonnet 5 priced on Kendr?

The dated reference snapshot lists $2 input and $10 output per million tokens. Cached input is $0.2 per million tokens. The separately published provider-route reference is $2 / $10* (Introductory through Aug 31, 2026). Kendr applies one 5% markup to configured provider model cost; the live quote and settled routing receipt are authoritative for a request.

Sources and evidence dates

Claude Sonnet 5 third-party catalog record (catalog, checked 2026-08-12)
Third-party model catalog methodology (methodology, checked 2026-08-12)
Anthropic official model documentation (primary, checked 2026-08-12)
Artificial Analysis capability indices methodology (benchmark, checked 2026-08-12)
Design Arena leaderboard and methodology (benchmark, checked 2026-08-12)
Claude Sonnet 5 provider or route reference (primary, checked 2026-08-12)