Anthropic Claude 4 model series releases
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Claude Opus 4.7 (April 2026) — see section below
Claude Opus 4.7
Released: April 2026
Overview
Claude Opus 4.7 is Anthropic’s frontier coding and reasoning model as of April 2026. It competes directly with GPT-5.4 and Kimi K2.6 Code on coding benchmarks, with benchmark improvements in SWE-bench and CursorBench versus Opus 4.6.
Key capabilities
- Coding: Improved SWE-bench and CursorBench scores vs Opus 4.6
- Vision upgrade: Enhanced vision/multimodal understanding
- Effort parameter: Supports an “effort” parameter for controlling reasoning depth (adaptive thinking)
- Prompting style shift: With Opus 4.7 and GPT-5.5, the advice is to treat AI as a senior partner — ask questions with clear point of view, defined boundaries, and room to challenge assumptions, rather than issuing narrow directives
Competitive positioning (April 2026)
- Best for: agentic coding workflows, complex reasoning, knowledge work
- GPT-5.4 outperforms Opus 4.7 on most coding tasks (per AICodeKing comparison); Kimi K2.6 Code beats Opus 4.7 on frontend tasks at lower cost
- Opus 4.7 justified mainly when its specific integrations (e.g., Verdent for parallel tasks and isolated workspaces) are advantageous
- Used as “builder agent” in Verifier Agent pattern (paired with GPT-5.5 as verifier)
Known leaks / roadmap context (as of April 2026)
- Codenamed elements mentioned in community: “Epitaxy,” “Mythos Fast Mode,” “Sonnet 4.8” (unconfirmed leaks as of April 1, 2026)
- 1M token context window reportedly being explored
Pricing
- Higher cost than alternatives (Qwen 3.6 Max, Kimi K2.6) — recommended mainly where specific Anthropic integrations provide workflow advantages
- Available via Anthropic API and Claude.ai
Sources:
- Claude Opus 4.7 Is Here — Better Coding, Benchmarks, Pricing, and Hidden Catches — AI Stack Engineer, 2026-04-16
- Opus 4.7 V/S GPT-5.4 V/S Kimi K2.6 Code — AICodeKing, 2026-04-18
- GPT-5.5 VERIFIED Opus 4.7 — A Pi Coding Agent That REVIEWS Like YOU — IndyDevDan, 2026-05-04
- Opus 4.7 and OpenAI 5.5 Made Your Prompting Style Obsolete — AI News & Strategy Daily, 2026-05-21