Head-to-head · 2026
Claude Opus 4.6 vs GPT-5.2 Pro
Verdict. Opus 4.6 for reasoning and long-context depth; GPT-5.2 Pro for native voice and the broadest multimodal + integration footprint.
| Claude Opus 4.6 | GPT-5.2 Pro | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Released | 2026-02-05 | 2026-01-01 |
| Context | 1M | 196K |
| Max output | 128K | — |
| Input /1M | $5.00 | $21.00 |
| Output /1M | $25.00 | $168.00 |
| Modalities | text, vision, code | text, vision, audio |
The analysis
Claude Opus 4.6 leads the reasoning benchmarks that matter for hard agentic work — 68.8% ARC-AGI-2 (vs 54.2%), 72.7% OSWorld, 90.2% BigLaw Bench — plus a 1M-token beta context and the Compaction API for effectively unbounded sessions.
GPT-5.2 Pro answers with breadth: native audio modality (voice in, voice out), strong general multimodal performance, the first 90% ARC-AGI-1, and the widest enterprise integration ecosystem. For voice-native products there is no close runner-up.
Both are premium-tier. The choice usually comes down to modality needs (voice → GPT) versus reasoning depth and long-context synthesis (→ Opus).
Pick Claude Opus 4.6 if…
- Hard reasoning, computer-use, or legal/technical depth
- Long-context research synthesis (1M beta)
- Parallel agent orchestration
Pick GPT-5.2 Pro if…
- Native voice / audio is core to your product
- You need the broadest multimodal coverage
- You are standardized on the OpenAI ecosystem
Claude Opus 4.6
The reasoning + long-context flagship. THE model for high-stakes synthesis.
GPT-5.2 Pro
Broadest multimodal + native voice — the general-purpose default.