Best LLMs with 1M+ context in 2026: GPT-5.5 leads, Gemini falters
Six models now claim 1M token contexts. MRCR v2 shows GPT-5.5 at 74% recall at 1M tokens; Gemini 3.5 Flash drops to 26%. Ranked by what they actually use.
Tag · 2026
Six models now claim 1M token contexts. MRCR v2 shows GPT-5.5 at 74% recall at 1M tokens; Gemini 3.5 Flash drops to 26%. Ranked by what they actually use.
We ran 12 coding, math, and data tasks through Opus 4.8, Opus 4.7, and GPT-5.5 via LLMTest. Opus 4.8 swept GPT-5.5 but split with its predecessor.
We tested four LLMs on six real buggy diffs: Claude Opus 4.7 swept the field, Haiku 4.5 beat GPT-4o 5-0, and GPT-4o finished with zero wins in 2026.