Claude Opus 5.5 vs Gemini 4 Argon Contributor
Both have similar output pricing, while Gemini 4 Argon Contributor offers a larger context window. Choose Claude Opus 5.5 or Gemini 4 Argon Contributor based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Opus 5.5 | Gemini 4 Argon Contributor |
|---|---|---|
| Provider | Anthropic | OpenCode Go |
| Input / 1M tokens | $4.00 | $4.00 |
| Output / 1M tokens | $20.00 | $20.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Oct 2026 |
| LMArena (Chatbot Arena) Elo score | 1516 | — |
| LMArena WebDev Elo score | 1811 | — |
| LMArena Vision Elo score | 1321 | — |
| GPQA Diamond score | 90.6 | — |
| Epoch Capabilities Index score | 167 | — |
FAQ
Is Claude Opus 5.5 or Gemini 4 Argon Contributor cheaper?
Claude Opus 5.5 and Gemini 4 Argon Contributor have comparable output pricing.
Which has the larger context window, Claude Opus 5.5 or Gemini 4 Argon Contributor?
Gemini 4 Argon Contributor has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.