Gemini Robotics-ER 1.6 Preview vs Gemini 4 Argon
Gemini 4 Argon comes out ahead, 52 to 46 on our weighted score, though Gemini Robotics-ER 1.6 Preview is 2× cheaper per token.
GoogleGemini Robotics-ER 1.6 Preview
46/100- ECI—
- Price$1.00 / $5.00
- Context131K
- Our pickGoogle
Gemini 4 Argon
52/100- ECI166.1
- Price$2.00 / $10.00
- Context1.05M
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Make it a three-way comparison.
Gemini 4 Argon is our pick
Gemini 4 Argon is the better all-round choice, scoring 52/100 against Gemini Robotics-ER 1.6 Preview (46). It leads on inputs & features and context window. Gemini Robotics-ER 1.6 Preview wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceGemini Robotics-ER 1.6 PreviewGemini Robotics-ER 1.6 Preview $2.00 · Gemini 4 Argon $4.00 per 1M tokens (3:1 blend)
- Longest contextGemini 4 ArgonGemini 4 Argon 1,048,576 · Gemini Robotics-ER 1.6 Preview 131,072 tokens
- Widest inputsGemini 4 ArgonGemini Robotics-ER 1.6 Preview: Text, Images, Audio, Video · Gemini 4 Argon: Text, Images, PDFs, Audio, Video
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Gemini Robotics-ER 1.6 Preview | Gemini 4 Argon |
|---|---|---|---|
| Price | 50% | 34 | 20 |
| Inputs & features | 30% | 80 | 100 |
| Context window | 20% | 25 | 61 |
| Overall | 100% | 46/100 | 52/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini Robotics-ER 1.6 PreviewGoogle | Gemini 4 ArgonGoogle |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | 166.1 |
| ECI rank | — | #7 of 165 |
| GPQA DiamondGraduate-level science questions | — | 96.4% |
| FrontierMath Tiers 1–3Research-level mathematics | — | 86.0% |
| OTIS Mock AIME 2024–2025Competition mathematics | — | 100% |
| SimpleQA VerifiedShort factual questions | — | 76.0% |
| Price per million tokens | ||
| Input | $1.00 (best) | $2.00 |
| Output | $5.00 (best) | $10.00 |
| Cached input | — | $0.10 |
| Blended (3:1) | $2.00 (best) | $4.00 |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 1 providers | Official Google API |
| Limits | ||
| Context window | 131,072 tokens | 1,048,576 tokens (best) |
| Max output | 65,536 tokens | 65,536 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | No | Yes |
| Audio | Yes | Yes |
| Video | Yes | Yes |
| Reasoning | Yes | Yeslow · medium · high |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | — | gemini-4-argon |
| API providers | 1 | 24 (best) |
| Released | Apr 14, 2026 | Oct 13, 2026 |
| Knowledge cutoff | Jan 2025 | Mar 2026 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Gemini Robotics-ER 1.6 Preview$20.00
- Gemini 4 Argon$40.00
Which should you choose?
Which is better: Gemini Robotics-ER 1.6 Preview or Gemini 4 Argon?
Gemini 4 Argon is the better all-round choice, scoring 52/100 against Gemini Robotics-ER 1.6 Preview (46). It leads on inputs & features and context window. Gemini Robotics-ER 1.6 Preview wins on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Gemini Robotics-ER 1.6 Preview or Gemini 4 Argon?
Gemini Robotics-ER 1.6 Preview is cheaper at $1.00 input / $5.00 output per million tokens (median across 1 API provider). Gemini 4 Argon costs $2.00 input / $10.00 output per million tokens (official Google API price). At a typical mix of three input tokens to one output token, that is $2.00 per million tokens for Gemini Robotics-ER 1.6 Preview versus $4.00 for Gemini 4 Argon (2× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Gemini Robotics-ER 1.6 Preview has not been scored yet and Gemini 4 Argon has an ECI of 166.1.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini Robotics-ER 1.6 Preview and Gemini 4 Argon yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Gemini 4 Argon has the largest context window at 1,048,576 tokens, against 131,072 for Gemini Robotics-ER 1.6 Preview. Maximum output per response: Gemini Robotics-ER 1.6 Preview up to 65,536, Gemini 4 Argon up to 65,536 tokens.
Which can read images, PDFs, audio or video?
Gemini Robotics-ER 1.6 Preview accepts text, images, audio and video; Gemini 4 Argon accepts text, images, PDFs, audio and video. Gemini 4 Argon handles the widest range of inputs.
Are any of these open source?
No. Gemini Robotics-ER 1.6 Preview and Gemini 4 Argon are proprietary and only available through APIs and apps.
Which is newer?
Gemini 4 Argon is the newest, released Oct 13, 2026. Gemini Robotics-ER 1.6 Preview came out Apr 14, 2026. Knowledge cutoff: Gemini Robotics-ER 1.6 Preview Jan 2025, Gemini 4 Argon Mar 2026.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
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