Claude Opus 4.7 vs GPT-4o
| Spec | Claude Opus 4.7 | GPT-4o |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input price (per 1M) | $15.00 | $2.50 |
| Output price (per 1M) | $75.00 | $10.00 |
| Context window | 200,000 | 128,000 |
| Tokenizer accuracy | exact (uses official tokenizer) | exact (uses official tokenizer) |
Verdict
This isn't a head-to-head — they're priced for different jobs. GPT-4o is the default workhorse for production AI. Claude Opus is the frontier-reasoning premium model you reach for when output quality measurably matters more than per-call cost.
If you're choosing between them on cost, you almost always want GPT-4o. If you're choosing on capability for hard problems, you might want Opus.
Cost example
For a 1,000-token prompt with a 200-token reply:
GPT-4o: 1000 × $2.50/M + 200 × $10/M = $0.0045 per call
Claude Opus: 1000 × $15/M + 200 × $75/M = $0.030 per callOpus costs ~6.7× more per call. For 1,000,000 calls per month: $4,500 vs $30,000 — a $25,500 difference.
When the Opus premium is worth it
- Multi-step reasoning where a wrong intermediate step compounds badly.
- Architecture and design decisions in code where the wrong choice costs days.
- Long-form writing where voice, structure, and nuance materially affect outcomes.
- High-stakes single-shot generation — legal drafts, executive summaries, customer-facing content where one mistake is expensive.
The decision rule: if a 5% quality improvement saves 6× the per-call cost in downstream consequences, Opus pays for itself.
When GPT-4o is enough (almost always)
- Routine chat and Q&A.
- RAG over routine documents.
- Code generation on greenfield problems.
- Classification, extraction, summarization.
- High-volume anything.
For most production workloads, GPT-4o is indistinguishable from Opus — and 6× cheaper.
The honest comparison: Opus vs Sonnet vs GPT-4o
If you've ruled in Claude for instruction-following nuance, the relevant comparison is Sonnet vs Opus, not Opus vs GPT-4o:
| Model | Input | Output | Use for |
|---|---|---|---|
| GPT-4o | $2.50 | $10 | Most production work |
| Claude Sonnet | $3.00 | $15 | When Claude's instruction-following matters |
| Claude Opus | $15 | $75 | When Sonnet measurably falls short |
Don't reach for Opus before you've measured Sonnet failing on your task.