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GPT-5.6 Sol×

DeepSeek-R1×

GPT-5 Pro×

Mistral Large 2×Clear all

	GPT-5.6 Sol OpenAI	DeepSeek-R1 DeepSeek	GPT-5 Pro OpenAI	Mistral Large 2 Mistral
Vendor	OpenAI	DeepSeek	OpenAI	Mistral
Family	GPT	DeepSeek	GPT	Mistral
Release date	2026-06-26	2025-01-20	2025-08-07	2024-07-24
Context window	—	128,000 tokens	400,000 tokens	128,000 tokens
Parameters	—	671B	—	123B
Modality	text, vision, audio	text	text, vision, audio	text
License	proprietary	MIT	proprietary	Mistral Research License
Source	proprietary	open weights	proprietary	open weights
Description	Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens.	Reasoning-focused open-weight model.	Higher-reasoning variant of GPT-5, used for harder scientific and research tasks (e.g., immunology breakthroughs at NIH). Same 400K context as GPT-5; trades latency for depth.	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.
Links	vendor →	weights →	vendor →	vendor →weights →
Benchmarks
HumanEval	—	—	—	89.0%
AIME-25	—	79.8%	—	—