Side by side pricing and context for Claude Opus 4.8 and Gemini 3.1 Pro. Rates are curated catalog values with last verified dates on each model page.
Claude Opus 4.8
Anthropic top-tier Claude for complex analysis, coding, and long-horizon agents. Highest Claude list prices here. Model cache savings carefully before high traffic.
Input $5.00 / Output $25.00 per 1M
Context 1M · Approx (Anthropic family)
Gemini 3.1 Pro
Newer Gemini Pro preview with higher list rates and long-context tiers. Confirm the preview model id and re-verify pricing before production lock-in.
Input $2.00 / Output $12.00 per 1M
Context 1M · Approx (Gemini family)
Quick take
- Gemini 3.1 Pro is cheaper on input in this catalog snapshot.
- Gemini 3.1 Pro is cheaper on output in this catalog snapshot.
- Both last verified on their model pages (2026-08-02 / 2026-08-02).
Rate table
| Metric | Claude Opus 4.8 | Gemini 3.1 Pro |
|---|---|---|
| Input / 1M | $5.00 | $2.00 |
| Output / 1M | $25.00 | $12.00 |
| Cached input / 1M | $0.500 | $0.200 |
| Context | 1M | 1M |
| Tokenizer | Approx (Anthropic family) | Approx (Gemini family) |