Gemini 3.8 Flash vs Gemini 4 Argon: Specs & Benchmark Comparison
Gemini 3.8 Flash and Gemini 4 Argon both come from Google, and both were released in September 2026.
The two models share 7 published benchmarks. Gemini 4 Argon leads on 7 of them. The widest gaps are on Terminal-Bench 4.0, where Gemini 4 Argon scores 57.4% against 19.1%; OSWorld 2.0, where Gemini 4 Argon scores 69.2% against 59.0%. Averaged across everything we track, Gemini 3.8 Flash sits at 59.2% and Gemini 4 Argon at 67.3%.
Gemini 3.8 Flash is available through an API at $0.75 per million input tokens with a 1M-token context window. We do not track a hosted API for Gemini 4 Argon, so pricing and context cannot be compared directly.
| Characteristic | Gemini 3.8 Flash | Gemini 4 Argon |
|---|---|---|
| Company | ||
| Release Date | September 2, 2026 | September 30, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | — |
| Context (output) | 66K | — |
| Input Price / 1M | $0.75 | — |
| Output Price / 1M | $3.75 | — |
| Average Score | 59.2% | 67.3% |
| Benchmarks | ||
| Terminal-Bench 4.0 | 19.1% | 57.4% |
| OSWorld 2.0 | 59.0% | 69.2% |
| Harvey's Legal Agent Benchmark | 10.0% | 19.6% |
| LVBench | 87.1% | 91.7% |
| DeepSWE 1.1 | 73.7% | 77.9% |
| Vals Finance Agent v2 | 61.4% | 65.4% |
| LABBench2 | 86.2% | 88.8% |
Visual Benchmark Comparison
Verdict
Gemini 4 Argon leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Gemini 3.8 Flash — 0.6, Gemini 4 Argon — 0.7.
Gemini 4 Argon is newer: released 9/30/2026 vs 9/2/2026.
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Frequently Asked Questions
Which is better for coding — Gemini 3.8 Flash or Gemini 4 Argon?
Which model is cheaper — Gemini 3.8 Flash or Gemini 4 Argon?
Which has a larger context window — Gemini 3.8 Flash or Gemini 4 Argon?
The Gemini 3.8 Flash and Gemini 4 Argon comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Gemini 3.8 Flash or Gemini 4 Argon page. See also the complete list of AI model comparisons.