Claude Opus 5.5 vs Gemini 3.8 Flash Cyber: Specs & Benchmark Comparison
Claude Opus 5.5 is developed by Anthropic, while Gemini 3.8 Flash Cyber comes from Google. Both were released in September 2026.
We have 31 benchmark results for Claude Opus 5.5 and 4 benchmark results for Gemini 3.8 Flash Cyber, but they were measured on different benchmarks, so there is no like-for-like scoreboard.
Claude Opus 5.5 is available through an API at $4 per million input tokens with a 1M-token context window. We do not track a hosted API for Gemini 3.8 Flash Cyber, so pricing and context cannot be compared directly.
| Characteristic | Claude Opus 5.5 | Gemini 3.8 Flash Cyber |
|---|---|---|
| Company | Anthropic | |
| Release Date | September 22, 2026 | September 2, 2026 |
| Parameters | — | — |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $4.00 | — |
| Output Price / 1M | $20.00 | — |
| Average Score | 71.1% | 74.6% |
Verdict
Claude Opus 5.5 leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Claude Opus 5.5 — 0.7, Gemini 3.8 Flash Cyber — 0.7.
Claude Opus 5.5 is newer: released 9/22/2026 vs 9/2/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5.5 or Gemini 3.8 Flash Cyber?
Which model is cheaper — Claude Opus 5.5 or Gemini 3.8 Flash Cyber?
Which has a larger context window — Claude Opus 5.5 or Gemini 3.8 Flash Cyber?
The Claude Opus 5.5 and Gemini 3.8 Flash Cyber comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 5.5 or Gemini 3.8 Flash Cyber page. See also the complete list of AI model comparisons.