High-volume, cost-sensitive work
Choose Gemini 4 Argon
Gemini 4 Argon costs 9% less on a typical mix of three input tokens for every output token ($4.00 against $4.38 per million tokens).
Gemini 4 Argon vs GPT-4o: price, context and capabilities
Choose Gemini 4 Argon for high-volume, cost-sensitive work, reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents and the latest release; on the other points the two are level or the data is missing.
In short
- Gemini 4 Argon is 9% cheaper than GPT-4o at the headline price ($4.00 / 1M tokens vs $4.38 / 1M tokens).
- Gemini 4 Argon reads more per request: 1.05M tokens against 128k.
- Gemini 4 Argon is the newer model (October 2026, against May 13, 2024).
- Only Gemini 4 Argon offers reasoning.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Reused prompts and documents (RAG, agents)
Choose Gemini 4 Argon
Gemini 4 Argon charges $0.10 per million cached input tokens, against $1.25 for GPT-4o.
Very long inputs
Choose Gemini 4 Argon
Gemini 4 Argon reads up to 1.05M tokens per request, against 128k for GPT-4o.
Reasoning over long documents
Choose Gemini 4 Argon
Gemini 4 Argon scores 79.7% on Long-context reasoning (AA-LCR), against 49.3% for GPT-4o.
Latest release
Choose Gemini 4 Argon
Gemini 4 Argon is the newer release (October 2026, against May 13, 2024 for GPT-4o).
Monthly cost at three volumes
| Volume | Gemini 4 Argon | GPT-4o | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $4.50 | $5.00 | Gemini 4 Argon, $0.50 less |
| Production: 20M input, 5M output tokens | $90.00 | $100.00 | Gemini 4 Argon, $10.00 less |
| Scale: 500M input, 100M output tokens | $2,000 | $2,250 | Gemini 4 Argon, $250.00 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Gemini 4 Argon | GPT-4o | |
|---|---|---|
| Provider | OpenAI | |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| Headline price | $4.00 / 1M tokens | $4.38 / 1M tokens |
| Input | $2.00 / 1M tokens | $2.50 / 1M tokens |
| Output | $10.00 / 1M tokens | $10.00 / 1M tokens |
| Cached input | $0.10 / 1M tokens | $1.25 / 1M tokens |
| Context window | 1.05M | 128k |
| Max output | 66k | 16k |
| Released | October 2026 | May 13, 2024 |
| Knowledge cutoff | No data | October 2023 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | gemini-4-argon | gpt-4o |
Benchmarks side by side
Leader in bold.
| Benchmark | Gemini 4 Argon | GPT-4o |
|---|---|---|
| Humanity's Last Exam | 57.1% | 2.4% |
| Long-context reasoning (AA-LCR) | 79.7% | 49.3% |
| Intelligence Index | 52.6 | No data |
| SciCode | 61.8% | No data |
| Terminal-Bench Hard | No data | 8.3% |
| GPQA Diamond | No data | 54.3% |
| IFBench (instruction following) | No data | 34.3% |
| τ²-Bench (agentic tool use) | No data | 25.1% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Gemini 4 Argon or GPT-4o?
Choose Gemini 4 Argon for high-volume, cost-sensitive work, reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents and the latest release; on the other points the two are level or the data is missing.
Which is cheaper, Gemini 4 Argon or GPT-4o?
Gemini 4 Argon is 9% cheaper than GPT-4o at the headline price ($4.00 / 1M tokens vs $4.38 / 1M tokens).
Which has the larger context window, Gemini 4 Argon or GPT-4o?
Gemini 4 Argon reads more per request: 1.05M tokens against 128k.
What is the difference between Gemini 4 Argon and GPT-4o?
Gemini 4 Argon is made by Google and GPT-4o by OpenAI. Gemini 4 Argon is 9% cheaper than GPT-4o at the headline price ($4.00 / 1M tokens vs $4.38 / 1M tokens). Gemini 4 Argon reads more per request: 1.05M tokens against 128k. Gemini 4 Argon is the newer model (October 2026, against May 13, 2024). Only Gemini 4 Argon offers reasoning.
How much do Gemini 4 Argon and GPT-4o cost per month?
At 20 million input and 5 million output tokens a month, Gemini 4 Argon costs $90.00 and GPT-4o costs $100.00, at standard rates.
Which is newer, Gemini 4 Argon or GPT-4o?
Gemini 4 Argon was released on October 2026 and GPT-4o on May 13, 2024.