Compare AI Models

Versions side by side — rows that differ across these models are highlighted.

3 models	Cl Anthropic Claude Opus 4.8 View →	Op OpenAI GPT-5.5 View →	Cl Anthropic Claude Opus 4.7 View →
Maker	Anthropic	OpenAI	Anthropic
Tier	Flagship	Flagship	Flagship
Status	Active	Default	Active
Context window	1M ctx	1M ctx	1M ctx
Knowledge cutoff	—	Jan 1, 2026	—
Released	May 28, 2026	Apr 23, 2026	Apr 16, 2026
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Note	Designated current flagship; reliability-focused Opus (4x less likely than 4.7 to let its own code flaws pass). 1M context, $5/$25, effort levels through xhigh/max, Fast mode at $10/$50. Guide positions Fable 5 one tier above it.	Current flagship general-purpose model; strong coding, reasoning, writing, and agentic tasks. Tiered pricing above a context threshold.	Prior Opus flagship, superseded by 4.8 (still active/available). Tripled image resolution to 3.75MP, introduced xhigh effort and self-verification, 87.6% SWE-bench Verified. $5/$25.