Claude Opus 4.6 vs Gemini 4 Argon
MirrorCode?
Opus 4.6—
Gemini 4 Argon58.9
| Benchmark | Opus 4.6 | Gemini 4 Argon |
|---|---|---|
| Terminal-Bench 4.0 | — | 57.1 |
| WebDev Arena | 1,547 | 1,678 |
| DeepSWE 1.1 | 31.9 · max | — |
| FrontierCode 1.1 | — | 43.5 |
| SWE-bench Pro (private) | 47.1 | — |
| SWE-bench Pro (v2 full) | — | 99.2 |
| SWE-bench Pro (v2 hard) | — | 92.2 |
| DeepSWE 1 | 27.6 · max | — |
| SciCode | — | 61.8 |
| Terminal-Bench Science 0.1 | — | 52.9 |
| Terminal-Bench Hard (version unstated) | 48.5 | — |
| MirrorCode | — | 58.9 |
Specs
| Spec | Opus 4.6 | Gemini 4 Argon |
|---|---|---|
| Input, per 1M | $5 | !$2 |
| Output, per 1M | $25 | !$10 |
| Cost per task? | — | $1.62 |
| Speed, tok/s | 43 | 79 |
| Context | 1M | 1M |
| Weights | Closed | Closed |
| Released | Feb 2026 | Oct 2026 |
| See images | ✓ | ✓ |
| Read PDFs | Partial | ✓ |
| Hear audio | — | ✓ |
| Watch video | — | ✓ |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | Partial |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ✓ |
| Run code | ? | ✓ |
| Use a computer | ? | ? |
What breaks when you switch
Opus 4.6 → Gemini 4 Argon
Synchronous output stops at 65,536›
With background false, output limits above 65,536 tokens return HTTP 400; stay at or below that limit.
Sampling parameters are ignored›
temperature, top_p and top_k are ignored; remove them from requests.
No explicit caching›
Explicit caching is unavailable; omit explicit cache requests.
Gemini 4 Argon → Opus 4.6
Nothing known.