20% off all GPT ๐ŸŽ‰ 30% off DeepSeekLearn more

Anthropic: Claude Sonnet 5

Chat
anthropic/claude-sonnet-5
CompareTry in PlaygroundGet started

Claude Sonnet 5 is Anthropic's flagship Sonnet-series model released on 2026-07-01, featuring a 1M-token context window and 128K output. It supports adaptive thinking (extended reasoning), vision, tool use, prompt caching, and web search. Available via both OpenAI-compatible and native Anthropic protocols through Ofox.

Context Window
1M
Max Output Tokens
128K
Released
2026-07-01
Capabilities
VisionFunction CallingReasoningPrompt CachingPDF Input
Available Providers
AnthropicBedrock
Supported Protocols
openaianthropic

Providers

Anthropicprovider.type: "anthropic"
Input Tokens
$2/M
Output Tokens
$10/M
Cache Read
$0.2/M
Cache Write (5 min)
$2.5/M
Cache Write (1 hour)
$4/M
Web Search
$0.01/R
Protocols
anthropic
Bedrockprovider.type: "aws_bedrock"
Input Tokens
$2/M
Output Tokens
$10/M
Cache Read
$0.2/M
Cache Write (5 min)
$2.5/M
Cache Write (1 hour)
$4/M
Web Search
$0.01/R
Protocols
openai/v1/chat/completions/v1/responses
anthropic

Playground

Open in OfoxChat

Code Examples

import anthropic


client = anthropic.Anthropic(
    base_url="https://api.ofox.io/anthropic",
    api_key="YOUR_OFOX_API_KEY",
)


message = client.messages.create(
    model="anthropic/claude-sonnet-5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)


print(message.content[0].text)

Uptime & Status

Benchmarks

LMArena โ†—Evaluated as claude-sonnet-5-high

Anthropic: Claude Sonnet 5 scores 1463 in the Overall category of the LMArena text leaderboard (style control), ranking #36 of 374 models based on 9,850 human preference votes (updated 2026-07-12).

Benchmark scores for claude-sonnet-5-high on LMArena
CategoryArena Score95% CIRankVotes
Overall14631456โ€“1470#36 of 3749,850
Hard Prompts14931485โ€“1501#23 of 3746,491
Coding15221510โ€“1534#15 of 3692,725
Math14631436โ€“1490#36 of 362449
Creative Writing14301416โ€“1445#48 of 3721,699
Instruction Following14651454โ€“1476#22 of 3743,269
Chinese15091482โ€“1535#23 of 344499

Source: LMArena ยท CC BY 4.0 ยท Updated 2026-07-12 ยท Methodology โ†— ยท Ranks compare models within each category of the LMArena text leaderboard (style control). Scores come from third-party human preference evaluations, not from OFOX.

Further Reading on Claude Sonnet 5

Related Models

More from Anthropic

Anthropic: Claude Sonnet 5.5
$2/M/$10/M
Anthropic: Claude Opus 5.5
$4/M/$20/M
Anthropic: Claude Fable 5.1
$10/M/$50/M

Similar Models

OpenAI: GPT-6 Luna
$0.1/M/$0.5/M
OpenAI: GPT-6 Sol
$2/M/$10/M
xAI: Grok 4.7
$2/M/$6/M

Frequently Asked Questions

Anthropic: Claude Sonnet 5 on Ofox.ai costs $2/M per million input tokens and $10/M per million output tokens. Pay-as-you-go, no monthly fees.