Claude 4.8 Opus
Anthropic's flagship model for coding and agents, building on Opus 4.7 with stronger reliability, a cheaper fast mode, and gains across coding, computer use, and professional work.
Claude 4.8 Opus at a glance
Context window
1M tokens
Input price
$5
per 1M tokens
Output price
$25
per 1M tokens
Why use Claude 4.8 Opus
Strengths, benchmarks, and where Claude 4.8 Opus fits in your team's workflow.
1. Modest but tangible gains across the board
- 69.2% on SWE-bench Pro (+4.9 points over Opus 4.7's 64.3%), 88.6% on SWE-bench Verified, and a 1,890 Elo on GDPval-AA - about 121 Elo ahead of GPT-5.5.
- Anthropic frames it as an incremental refinement of Opus 4.7 rather than a step-change release.
2. The most reliable agent model Anthropic has shipped
- The only model to complete every case end-to-end on Anthropic's internal Super-Agent benchmark, beating prior Opus models and GPT-5.5 at parity on cost.
- Leads CursorBench across every effort level with more efficient tool calling - fewer steps for the same intelligence.
- 84% on Online-Mind2Web and stronger OSWorld-Verified scores make it the strongest computer-use and browser-agent model Anthropic has tested.
3. New highs for professional and legal work
- Highest score ever recorded on Anthropic's Legal Agent Benchmark, and the first model to break 10% on its all-pass standard.
- Roughly a 4x improvement in honesty and calibrated uncertainty versus Opus 4.7 on Anthropic's evaluations.
4. Cheaper, faster controls
- Standard pricing holds at $5/M input and $25/M output, unchanged from Opus 4.7.
- Fast mode now runs at 2.5x speed for $10/M input and $50/M output - about a third of what fast mode cost on prior Opus releases.
- A new effort dial gives finer control over how hard the model works before answering.
5. Long-horizon agent workflows
- 1M token context window in beta and up to 128K output tokens.
- Introduces Dynamic Workflows (research preview) in Claude Code - Opus can write its own orchestration script and run up to 16 concurrent / 1,000 total subagents in a single session.
Power your team with Claude 4.8 Opus
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by Claude 4.8 Opus - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with Claude 4.8 Opus as the engine. No code, no deployment.
Give Claude 4.8 Opus your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so Claude 4.8 Opus works with real context, not generic answers.
Automate recurring tasks
Schedule Claude 4.8 Opus to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by Claude 4.8 Opus - connected to the tools you already use.
Where teams use Claude 4.8 Opus
See how teams put Claude 4.8 Opus to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with Claude 4.8 Opus doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by Claude 4.8 Opus.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
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Build internal AI tools with Claude 4.8 Opus
Describe the tool your team needs and get a working app powered by Claude 4.8 Opus - with a built-in database, team access, and integrations. No code, no deployment.