GPT-5.6 Sol vs Claude Opus 5.5: scores, price and which to pick

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Our take

Claude Opus 5.5 wins 4 of 4 categories.

Overall6897Best

Coding67100Best

Writing67100Best

Support6690Best

Value5483Best

Input / 1M$4.00$4.00

Output / 1M$20.00$20.00

Blended / 1M$8.00$8.00

Context window1.1MBest1M

Open weightsNoNo

Released9 Jul 202622 Sept 2026

Your monthly bill

Tasks per month50k

GPT-5.6 Sol$1.6kCheapest

Claude Opus 5.5$1.6kCheapest

List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.