Claude Opus 4.8 — AI Text Generator
Claude Opus 4.8 is available on Artifio.ai as part of our unified AI workspace. Powered by Anthropic. Starting at about $0.050 per generation.
Start with Claude Opus 4.8
Claude Opus 4.8 pricing
This model uses usage-based billing. The amount below is an upfront estimate; the final charge is reconciled after the response.
| Settings | Upfront estimate |
|---|---|
| Default settings | $0.050 |
Review the estimate for your selected settings before submitting. Compare model pricing
About Claude Opus 4.8
Claude Opus 4.8 is Anthropic's flagship generally available language model, released on May 28, 2026, just 41 days after Claude Opus 4.7. The focus is agentic coding and enterprise work: Anthropic reported gains in coding, reasoning, tool use, and knowledge work, with a 69.2 percent score on SWE-Bench Pro and 84 percent on the Online-Mind2Web browser benchmark.
Honesty is this version's signature claim. Anthropic says Opus 4.8 is around four times less likely than Opus 4.7 to let a flaw in its own code pass unremarked, and more willing to admit when it lacks the information to answer. Artifio offers it beside 100-plus other models in a single pay-per-generation workspace.
Features
- Text and reasoning model with image input, tuned for complex agentic coding and enterprise work.
- 1M-token context window by default and 128k-token maximum output; batch processing supports up to 300k output tokens in beta.
- Adaptive thinking that reasons only when a turn needs it, cutting wasted thinking tokens on mixed workloads.
- Fast mode research preview delivers up to 2.5 times higher output speed from the same model at premium pricing.
- Dynamic workflows research preview in Claude Code can plan a task and run hundreds of parallel subagents in one session.
- Accepts mid-conversation system messages, so instructions can change during a long agent run without losing the prompt cache.
- Training data through January 2026.
What people use it for
- Large-scale codebase migrations and refactors using parallel subagents.
- Long-horizon agent runs where compaction recovery and tool-call reliability decide success.
- Browser and computer-use automation; it scored 84 percent on Online-Mind2Web.
- Enterprise knowledge work, including the financial analysis tasks Anthropic highlighted at launch.
- Code review, given its higher rate of flagging flaws in generated code.
Reported strengths
- 69.2 percent on SWE-Bench Pro at release, ahead of GPT-5.5 and Gemini 3.1 Pro on several reported benchmarks.
- Around four times less likely than Opus 4.7 to leave flaws in its own code unremarked.
- More candid about uncertainty; launch coverage noted it flags missing information rather than guessing.
- Better tool triggering than Opus 4.7, which was prone to skipping required tool calls.
- Prompt-cache minimum of 1,024 tokens, half the Opus 4.7 threshold, so shorter prompts can be cached.
Reported limitations
- Sampling parameters are locked: setting temperature, top_p, or top_k returns an error, as on Opus 4.7.
- Manual extended-thinking budgets are not supported; adaptive thinking is the only thinking mode.
- Effort levels were recalibrated from Opus 4.7, so prompts tuned to a given level need cost and latency re-baselining.
- Anthropic positions its newer Fable and Mythos class above Opus 4.8 for the highest-capability workloads.
Sources
Claude Opus 4.8 FAQ
What is Claude Opus 4.8?
Claude Opus 4.8 is an AI model (prompt to text) available on Artifio.ai through Anthropic. You can run it in our workspace from a single shared wallet and download your outputs.
How much does Claude Opus 4.8 cost on Artifio?
Claude Opus 4.8 has a starting estimate of $0.050 per generation on Artifio.ai. Review the estimate for your settings in the workspace before confirming. Usage-billed models reconcile the final charge after generation.
How do I use Claude Opus 4.8 on Artifio?
Click Generate Now to open the workspace at /create/claude-opus-4-8. Fill in the form fields, review the live cost estimate, and run your generation.
What kind of outputs does Claude Opus 4.8 produce?
Claude Opus 4.8 is configured for prompt to text workflows in the text category. See the technical parameters below for supported inputs and options.
Can I try Claude Opus 4.8 for free?
Sign up free, top up your wallet from $1, and you can run Claude Opus 4.8 pay-as-you-go without a separate subscription for this model.
Try Claude Opus 4.8 on Artifio
Open the workspace with this model pre-selected. Review your prompt, settings, and cost before you generate.
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