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Long context

Claude Sonnet 5 API pricing

Anthropic's Claude series — long context, dependable tool calling, and the native models behind Claude Code.

Model IDanthropic/claude-sonnet-5
ChatStreamingTool callingVision
Get API KeyRun your first request

Call summary

Input
$3.00$0.90/ 1M tokens
Cache write $1.875
Cache read $0.15
Output
$15.00$4.50/ 1M tokens
Context Window
1.05M
API Endpoints
2

Claude Sonnet 5 API endpoints

One API key — call this model through any of the 2 endpoints below.

POST/v1/chat/completionsOpenAI-compatible · Works for every model
Chat Completions reference
POST/v1/messagesAnthropic-native · Native for Claude Code
Messages API reference

Production reliability

Privacy-safe aggregates from real Router One model calls, so you can assess stability and response latency before integrating.

Successful response share

99.57%

Success 2xx

99.57%

Rate limit 429

0.00%

Server 5xx

0.43%

TPS

101.79

tokens/s
Avg. time to first token

8.96 s

Avg. latency

25.5 s

Includes production requests ending in 2xx, 429, or 5xx. Average latency uses successful requests; time to first token and TPS require complete observations from successful streams. Public thresholds are 100 requests and 5 independent principals.

Updated Oct 24, 2026, 8:12 PM UTC

More Claude models on Router One

29 other Claude models on the same gateway and API key — each page lists endpoints, posted price, and context window.

Claude Fable 5$8.00 in / $40.00 out per 1M1.05M contextClaude Fable 5.1$6.00 in / $30.00 out per 1M1.05M contextClaude Haiku 4.5$0.30 in / $3.00 out per 1M200K contextClaude Haiku 5.5$0.06 in / $0.30 out per 1M1.05M contextClaude Opus 4.6$2.25 in / $11.25 out per 1M1.05M contextClaude Opus 4.6 (thinking)$2.25 in / $11.25 out per 1M1.05M contextClaude Opus 4.7 (thinking)$2.25 in / $11.25 out per 1M1.05M contextClaude Opus 4.8$2.25 in / $11.25 out per 1M1.05M contextClaude Opus 5$2.25 in / $11.25 out per 1M1.05M contextClaude Opus 5.5$2.40 in / $12.00 out per 1M1.05M contextClaude Sonnet 4.6$0.90 in / $4.50 out per 1M1.05M contextClaude Sonnet 4.6 (thinking)$0.90 in / $4.50 out per 1M1.05M contextClaude Sonnet 5.5$1.20 in / $6.00 out per 1M1.05M context
16 channel versions
Claude Haiku 4.5 · AWS$1.00 in / $5.00 out per 1M200K contextClaude Opus 4.5 · AWS$5.00 in / $25.00 out per 1M200K contextClaude Opus 4.6 · AWS$5.00 in / $25.00 out per 1M1M contextClaude Opus 4.7 · AWS$5.00 in / $25.00 out per 1M1M contextClaude Opus 4.8 · AWS$5.00 in / $25.00 out per 1M1M contextClaude Opus 5 · AWS$5.00 in / $25.00 out per 1M1M contextClaude Sonnet 4.5 · AWS$3.00 in / $15.00 out per 1M200K contextClaude Sonnet 4.6 · AWS$3.00 in / $15.00 out per 1M1M contextClaude Sonnet 5 · AWS$2.00 in / $10.00 out per 1M1M contextClaude Opus 4.6 · Vertex$5.00 in / $25.00 out per 1M1M contextClaude Opus 4.7 · Vertex$5.00 in / $25.00 out per 1M1M contextClaude Opus 4.8 · Vertex$5.00 in / $25.00 out per 1M1M contextClaude Opus 5 · Vertex$5.00 in / $25.00 out per 1M1M contextClaude Sonnet 4.5 · Vertex$3.00 in / $15.00 out per 1M200K contextClaude Sonnet 4.6 · Vertex$3.00 in / $15.00 out per 1M1M contextClaude Sonnet 5 · Vertex$2.00 in / $10.00 out per 1M1M context

Claude Sonnet 5 compared with other models

Spec and price matchups against peer models.

Claude Opus 4.8 vs Claude Sonnet 5Claude Sonnet 5 vs Claude Sonnet 4.6Gemini 3.8 Flash vs Claude Sonnet 5GPT-5.6 Terra vs Claude Sonnet 5Claude Opus 5 vs Claude Sonnet 5Grok 4.6 vs Claude Sonnet 5Claude Sonnet 5 (AWS) vs Claude Sonnet 5GPT-6 Sol vs Claude Sonnet 5Claude Opus 5.5 vs Claude Sonnet 5Claude Sonnet 5.5 vs Claude Sonnet 5

Claude Sonnet 5 at a glance

Claude Sonnet 5 (model ID anthropic/claude-sonnet-5) is a Claude-series text model on Router One. Posted rate: $0.90 in / $4.50 out per 1M tokens (was $3.00 in / $15.00 out). Router One subscriptions include Claude Sonnet 5 in the Mid-tier models allowance: Pro 1,200, Max 4,500, Ultra 15,000 requests per 30-day cycle. Usage beyond the allowance bills the wallet at posted rates. Within a plan allowance, a request above 256,000 / 512,000 input tokens counts as 2 / 4 requests. Context window: 1.05M tokens. Accepts text, image; returns text. Endpoints: POST /v1/chat/completions (OpenAI-compatible), POST /v1/messages (Anthropic-native, the Claude Code path).

Claude Sonnet 5 FAQ

How much does Claude Sonnet 5 cost on Router One?

Claude Sonnet 5 is billed per token on Router One: $0.90 in / $4.50 out per 1M tokens, pay as you go.

Is Claude Sonnet 5 included in Router One subscriptions?

Router One subscriptions include Claude Sonnet 5 in the Mid-tier models allowance: Pro 1,200, Max 4,500, Ultra 15,000 requests per 30-day cycle. Usage beyond the allowance bills the wallet at posted rates. Within a plan allowance, a request above 256,000 / 512,000 input tokens counts as 2 / 4 requests.

Which endpoints serve Claude Sonnet 5?

Claude Sonnet 5 is served on 2 endpoints — POST /v1/chat/completions (OpenAI-compatible), POST /v1/messages (Anthropic-native, the Claude Code path). The same Router One API key works on each.

What is Claude Sonnet 5's context window?

Claude Sonnet 5 accepts up to 1.05M tokens of context per request on Router One.

Start using Claude Sonnet 5

Create an API key and call Claude Sonnet 5 at $0.90 in / $4.50 out per 1M tokens on Router One — pay as you go, with per-request cost and latency visibility.

Get API KeyPlans & pay-as-you-go pricingCompare models side by sideQuickstart guideClaude API access