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SelectedOpenAI logoGPT-5.5×OpenAI logoGPT-5×Mistral logoMistral Large 2×Anthropic logoClaude 4.7 Opus×Clear all
 
OpenAI logoGPT-5.5

OpenAI

OpenAI logoGPT-5

OpenAI

Mistral logoMistral Large 2

Mistral

Anthropic logoClaude 4.7 Opus

Anthropic

VendorOpenAIOpenAIMistralAnthropic
FamilyGPTGPTMistralClaude
Release date2026-04-232025-08-072024-07-242026-04-16
Context window400,000 tokens400,000 tokens128,000 tokens1,000,000 tokens
Parameters123B
Modalitytext, vision, audiotext, vision, audiotexttext, vision
LicenseproprietaryproprietaryMistral Research Licenseproprietary
Sourceproprietaryproprietaryopen weightsproprietary
DescriptionOpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026.Large text-only Mistral model with a 128K context window and 123B parameters, tuned for strong instruction following and long-context reasoning. Mistral's flagship open-weights release in the Large 2 line.Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6.
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Benchmarks
MMLU-Pro87.6%85.1%88.2%
GPQA-D89.4%87.3%90.1%
HumanEval96.8%95.2%89.0%97.4%
Aider89.7%85.4%91.2%
AIME-2594.2%91.0%93.5%
LiveCB78.9%74.5%80.2%
MMMU78.4%74.1%79.0%

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