Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5.2-Codex
Side-by-side comparison of Anthropic: Claude Opus 4.6 and OpenAI: GPT-5.2-Codex. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
moderate confidenceAnthropic: Claude Opus 4.6 leads overall
Anthropic: Claude Opus 4.6 has a meaningful edge overall, but OpenAI: GPT-5.2-Codex is stronger in specific areas. Your use case determines the right pick.
Best for with Anthropic: Claude Opus 4.6
Best for with OpenAI: GPT-5.2-Codex
Side-by-side
Technical specifications
| Anthropic: Claude Opus 4.6 | OpenAI: GPT-5.2-Codex | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input price | $5/M | $2/M |
| Output price | $25/M | $14/M |
| Context window | 1.0M | 400K |
| Max output | 128K | 128K |
| Capabilities | Tool useVisionReasoning | Tool useVisionReasoning |
| Released | Feb 4, 2026 | Jan 14, 2026 |
Scoring breakdown
How each dimension compares
Price
OpenAI: GPT-5.2-Codex leadsAnthropic: Claude Opus 4.6
$5/M in / $25/M out
OpenAI: GPT-5.2-Codex
$2/M in / $14/M out
Context Window
Anthropic: Claude Opus 4.6 leadsAnthropic: Claude Opus 4.6
1.0M
OpenAI: GPT-5.2-Codex
400K
Capabilities
Anthropic: Claude Opus 4.6
3/4 features
OpenAI: GPT-5.2-Codex
3/4 features
Max Output
Anthropic: Claude Opus 4.6
128K
OpenAI: GPT-5.2-Codex
128K
Release Date
Anthropic: Claude Opus 4.6 leadsAnthropic: Claude Opus 4.6
Feb 4, 2026
OpenAI: GPT-5.2-Codex
Jan 14, 2026
Related comparisons
Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5.4 Pro
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5.4
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5.3 Chat
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs Google: Gemini 3.1 Pro Preview Custom Tools
flagship tier · Cross-provider