On April 16, 2026, Anthropic released Claude Opus 4.7 (model ID claude-opus-4-7), a high-end model in the Opus line. Note that Opus 4.8 launched in late May 2026 and Opus 5 on July 24, 2026, so the current top model has since changed — check the Opus 5 guide and model comparison or the official page for the latest lineup.
🟢 Claude Opus 4.7 · model notice · Fable subscription
Fable 5 and 5.1 subscription (updated September 7, 2026): Claude Fable 5.1, released September 1, 2026, is the current Fable model and Fable 5 is now legacy. Plan terms are the same for both — Max and Team Premium plans include Fable at up to 50% of the weekly usage limit; Pro and Team Standard use usage credits (
Key specs
- Context window: 1 million tokens (1M)
- Max output: 128K tokens
- Adaptive thinking: automatically adjusts reasoning depth based on task complexity
- High-resolution vision: supports images up to roughly 3.75 megapixels (2,576px) — 3x the resolution of Opus 4.6
- Pricing: $5 per million input tokens, $25 per million output tokens (same as Opus 4.6)
New features
xhigh effort level
A new xhigh level has been added between the existing high and max. It gives finer control over the trade-off between reasoning depth, cost, and speed. Claude Code uses xhigh as the default in many coding workflows.
Task Budgets
A feature for setting a token-budget cap on long-running agent tasks. The model treats the remaining budget as a countdown and wraps up gracefully when the budget runs out. Analysts called it the most underrated feature of launch week.
/ultrareview (Claude Code)
A multi-pass code-review command that examines bugs, edge cases, security issues, and logic errors more deeply than a standard review. Pro and Max subscribers get a set number of free uses per billing cycle.
Performance gains
Coding and agent tasks improved substantially. The SWE-bench Pro score rose about 10.9 points, from 53.4% on Opus 4.6 to 64.3%, and SWE-bench Verified rose from 80.8% to 87.6%.
Caution: tokenizer change
Opus 4.7 uses a new tokenizer. Even for identical input, the token count may increase by 1.0–1.35x (up to about 35%) depending on the content. Pricing itself is frozen, but actual token consumption may rise, so it's worth re-checking the cost estimates of your existing workflows. We recommend leaving headroom in the max_tokens parameter.
Available platforms
Available from launch day in the Claude app (Pro/Max/Team/Enterprise), the Anthropic API, Amazon Bedrock, Google Cloud Vertex AI, Microsoft Foundry, Claude Code, Cursor, and GitHub Copilot.
For complex reasoning, the API\u2019s extended thinking turns on step-by-step reasoning.
This article is based on public official announcements and press materials. Model specs and features may be updated; check Anthropic's official documentation for the latest.
Model specs, pricing, and lineup may change (the current top-tier model is Opus 5, re-checked September 2026); verify the latest in Anthropic's official docs (anthropic.com/news, platform.claude.com/docs). This site is not an official Anthropic site.
Related: Claude Model Selection Guide · Opus 4.8 New Features Guide.
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