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Claude Opus 4.8 vs Claude Sonnet 4.0

Compare Claude Opus 4.8 from Anthropic and Claude Sonnet 4.0 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

AnthropicClaude Opus 4.8AnthropicClaude Sonnet 4.0
+ Add model · 2/4
Anthropic logo
Claude Opus 4.8
Anthropic · text, image, pdf → text

Claude Opus 4.5 is Anthropic’s latest frontier reasoning model, optimized for complex engineering, agentic workflows, and long-horizon computer use. It features strong multimodal capabilities, improved resistance to prompt injection, and a new Verbosity parameter to control token efficiency. With advanced tool use, extended context, and multi-agent support, Opus 4.5 excels in autonomous research, debugging, planning, and spreadsheet/browser operations.

Input$5 /M
Output$25 /M
Cache read$0.5 /M
Details
Anthropic logo
Claude Sonnet 4.0
Anthropic · text, image → text

Claude Sonnet 4 is a significant upgrade to Sonnet 3.7, delivering superior performance in coding and reasoning with enhanced precision and control. Achieving a state-of-the-art 72.7% on SWE-bench, the model expertly balances advanced capability with computational efficiency. Key improvements include more reliable codebase navigation and complex instruction following, making it ideal for a wide range of applications, from routine coding to complex software development projects.

Input$3 /M
Output$15 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Claude Opus 4.8
Claude Sonnet 4.0
Input /M
$5
$3
Output /M
$25
$15
Cache read /M
$0.5
-
Context length
1,000,000
NaN
Max output
128,000
0
Time to First Token
-
2.1 s
Throughput
-
72.5 tok/s
Modalities
textimagepdf
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputs
thinkingtoolsfunction callingstructured outputs
API Formats
Released
May 28, 2026
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

claude-opus-4-8claude-sonnet-4-0

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

claude-opus-4-8claude-sonnet-4-0

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

Claude Sonnet 4.0
$405 /mo
Claude Opus 4.8
$675 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Claude Opus 4.8, Claude Sonnet 4.0?

Claude Sonnet 4.0: $15/M output tokens; Claude Opus 4.8: $25/M. Use the cost calculator above to estimate your own workload.

What inputs and capabilities does each model support?

Claude Opus 4.8 accepts text, image and PDF input and supports thinking, tool calling, function calling and structured outputs; Claude Sonnet 4.0 accepts text and image input and supports thinking, tool calling, function calling and structured outputs.

Can I call Claude Opus 4.8 and Claude Sonnet 4.0 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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