Claude Sonnet 5.5 vs Gemini 3.8 Flash Cyber: Specs & Benchmark Comparison
Claude Sonnet 5.5 is developed by Anthropic, while Gemini 3.8 Flash Cyber comes from Google. Both were released in September 2026.
We have 47 benchmark results for Claude Sonnet 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 Sonnet 5.5 is available through an API at $2 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 Sonnet 5.5 | Gemini 3.8 Flash Cyber |
|---|---|---|
| Company | Anthropic | |
| Release Date | September 28, 2026 | September 2, 2026 |
| Parameters | — | — |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $2.00 | — |
| Output Price / 1M | $10.00 | — |
| Average Score | 67.4% | 74.6% |
Verdict
Claude Sonnet 5.5 leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Claude Sonnet 5.5 — 0.7, Gemini 3.8 Flash Cyber — 0.7.
Claude Sonnet 5.5 is newer: released 9/28/2026 vs 9/2/2026.
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Frequently Asked Questions
Which is better for coding — Claude Sonnet 5.5 or Gemini 3.8 Flash Cyber?
Which model is cheaper — Claude Sonnet 5.5 or Gemini 3.8 Flash Cyber?
Which has a larger context window — Claude Sonnet 5.5 or Gemini 3.8 Flash Cyber?
The Claude Sonnet 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 Sonnet 5.5 or Gemini 3.8 Flash Cyber page. See also the complete list of AI model comparisons.