Tool review · Generative AI
Claude Opus 4.8 review
Claude Opus 4.8 is a large language model from Anthropic. Its strengths are proven and well-tested in production; strong reasoning and coding. The main caution: superseded by Opus 5 and Opus 5.5.
What it is
Claude Opus 4.8 was Anthropic's flagship before Opus 5 and 5.5. It is still available at $5 and $25 per million tokens and supports fast mode, but new projects will usually get better value from the newer Opus models.
Key features
- 1M-token context window at standard pricing
- Agentic tool use and computer use
- Fast mode available at premium pricing
- Available through the API and major clouds
Pros
- Proven and well-tested in production
- Strong reasoning and coding
- Familiar behavior for teams already using it
Cons
- Superseded by Opus 5 and Opus 5.5
- Same price as Opus 5 with less capability
- Fewer improvements on agentic tasks
Pricing
Claude Opus 4.8 is priced by usage rather than by seat: API: $5 in / $25 out per M tokens. That means cost scales with how much text you send and receive, so estimate your monthly volume before committing.
How to get started
Start with one real task you already do each week, give the model the full context, and compare the result with your usual output before changing your workflow. Keep sensitive client or patient data out of consumer chat apps unless your organization has approved the plan.
Alternatives to consider
- ChatGPT (OpenAI, $20/mo): OpenAI's flagship conversational AI.
- Claude (Anthropic, $20/mo): Anthropic's assistant, known for long-context reasoning, careful writing, and safety-aware outputs.
- Claude Fable 5 (Anthropic, API: $10 in / $50 out per M tokens): Claude Fable 5 is a premium-tier Claude model priced above Opus, aimed at the hardest professional and technical work.
- Claude Fable 5.1 (Anthropic, API: $10 in / $50 out per M tokens): Claude Fable 5.1 is Anthropic's premium generally available model, priced above Opus and built for the hardest reasoning, coding and analysis tasks.
- Claude Haiku 4.5 (Anthropic, API: $1 in / $5 out per M tokens): Claude Haiku 4.5 is Anthropic's fast, low-cost model at $1 and $5 per million tokens.
Frequently asked questions
What is Claude Opus 4.8?
Claude Opus 4.8 was Anthropic's flagship before Opus 5 and 5.5. It is still available at $5 and $25 per million tokens and supports fast mode, but new projects will usually get better value from the newer Opus models.
How much does Claude Opus 4.8 cost?
Claude Opus 4.8 is priced by usage rather than by seat: API: $5 in / $25 out per M tokens. That means cost scales with how much text you send and receive, so estimate your monthly volume before committing.
Is there a free version of Claude Opus 4.8?
Claude Opus 4.8 does not currently list a permanent free tier. Look for a trial or a low-cost plan to test it on real work first.
What are the alternatives to Claude Opus 4.8?
Comparable generative ai options we review include ChatGPT, Claude, Claude Fable 5 and Claude Fable 5.1. Read each review to compare pricing, strengths and limits.
Independent review by the AI by Career editorial team. Last reviewed September 2026. No paid placement or affiliate influence; see our editorial policy.