Anthropic: Claude Opus 4.8
Analysis Summary
Claude Opus 4.8 is Anthropic’s flagship, with exceptional reasoning, strong coding, and reliable tool-use results. Its 1M-token context, vision, and file support are useful for codebases, complex documents, and workflows that combine text with images. Function calling supports integration into agentic products and business systems.
For client work, it fits software engineering, long-document analysis, and high-stakes content or research where accuracy and depth matter more than throughput. Its instruction-following and long-context results support structured work, while its benchmarked tool performance strengthens multi-step workflows. It is less compelling as the default for routine, high-volume calls because input and output pricing are premium.
Adopt Opus 4.8 for demanding workflows where better reasoning can justify the cost, and route simpler requests to a lower-cost model.
Assessed September 23, 2026
Editorial notes
Recency adjustment: Anthropic: Claude Opus 5.5 is the current flagship in this family. Score trimmed slightly but kept above weaker non-family models to preserve overall ranking integrity.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
Recency adjustment: Anthropic: Claude Opus 5.5 is the current flagship in this family. Score trimmed slightly but kept above weaker non-family models to preserve overall ranking integrity.
Benchmarks
Artificial Analysis data refreshed Nov 7, 2026. Arena ratings from the Oct 28, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.
Artificial Analysis no longer lists this model, so its indexes are converted from their older scale to stay comparable.
How Anthropic: Claude Opus 4.8 compares
Anthropic: Claude Opus 4.8 ranks #31 of 447 AI models we track for overall intelligence, #23 of 199 for coding, #31 of 181 for agentic tasks. Its 1M-token context window is larger than 85% of the models we list. At $5.00 per million input tokens it is cheaper than 5% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $25.00 | $0.025000 |
What would Anthropic: Claude Opus 4.8 cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 733 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Anthropic: Claude Opus 4.8 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout Anthropic: Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token..
Frequently asked questions about Anthropic: Claude Opus 4.8
How much does Anthropic: Claude Opus 4.8 cost?
Anthropic: Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens.
What is the context window of Anthropic: Claude Opus 4.8?
Anthropic: Claude Opus 4.8 has a context window of 1,000,000 tokens (1M).
Is Anthropic: Claude Opus 4.8 good for coding?
On our coding benchmark index, Anthropic: Claude Opus 4.8 ranks #23 of 199 models, placing it in the top quartile of the field for code generation and debugging.
What can Anthropic: Claude Opus 4.8 do?
Anthropic: Claude Opus 4.8 supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Opus 4.8?
Anthropic: Claude Opus 4.8 is developed by Anthropic and was released on May 27, 2026.