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Comparison of Claude Opus 5.5, GPT-6 Astra, GPT-6.1 Sol
Attribute
AnthropicRemove
OpenAIRemove
OpenAIRemove
Price per 1M tokens
Input$4.00$10.00$2.00
Output$20.00$50.00$10.00
Cached input$0.20$1.00$0.10
Long prompts-$20.00 in, $75.00 out past 272K$4.00 in, $15.00 out past 272K
Limits
Context window1M1.05M1.05M
Max output128K128K128K
Scores
Intelligence169169168
Coding64.8% · Claude Code-58.2% · Codex
Capabilities
ReasoningYesYes, 4 effort levelsYes, 4 effort levels
Image inputYesYesYes
Tool callsYesYesYes
Structured outputsNoNoYes
Open weightsNoNoNo
Data
Where prompts goThe provider's own retention policy applies.The provider's own retention policy applies.The provider's own retention policy applies.
Release
ReleasedSep 22, 2026Sep 3, 2026Sep 29, 2026

Intelligence is the Epoch Capabilities Index (Epoch AI, CC BY 4.0). Coding is Terminal-Bench 4.0, the share of tasks solved by the agent shown.

TokenSpend stores no prompt or response content for any model. See Trust.