Claude
3-tier model family: Sonnet for daily code, Opus for complex reasoning, Haiku for quick tasks. Opus 4.8 is the current flagship (launched 2026). 1M token window, top reasoning benchmarks.
Strengths
- Opus 4.6 tops PhD-level reasoning benchmarks (91.3% GPQA Diamond)
- 1M token context window, ingests entire codebases or document libraries
- Three-tier model family balances power/speed/cost for every use case
- Constitutional AI design, lowest prompt injection success rate in the industry
Limitations
- Opus 4.6 expensive, pricing limits high-volume production use
- Haiku unsuitable for complex reasoning or long-document analysis
- Slower than Gemini Flash for latency-critical, high-throughput pipelines
Best for
- Complex reasoning, long-form writing, and code generation at scale
- Agentic workflows with tool use, multi-step planning, and safety