High-volume, cost-sensitive work
Choose o3
o3 costs 13% less on a typical mix of three input tokens for every output token ($3.50 against $4.00 per million tokens).
Gemini 4 Argon vs o3: price, context and capabilities
Choose Gemini 4 Argon for reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents and the latest release. Choose o3 for high-volume, cost-sensitive work and writing and code generation.
In short
- o3 is 13% cheaper than Gemini 4 Argon at the headline price ($3.50 / 1M tokens vs $4.00 / 1M tokens).
- Gemini 4 Argon reads more per request: 1.05M tokens against 200k.
- Gemini 4 Argon is the newer model (October 2026, against Apr 16, 2025).
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose o3
o3 charges $8.00 per million output tokens, against $10.00 for Gemini 4 Argon. Output dominates the bill when answers are long.
Reused prompts and documents (RAG, agents)
Choose Gemini 4 Argon
Gemini 4 Argon charges $0.10 per million cached input tokens, against $0.50 for o3.
Very long inputs
Choose Gemini 4 Argon
Gemini 4 Argon reads up to 1.05M tokens per request, against 200k for o3.
Reasoning over long documents
Choose Gemini 4 Argon
Gemini 4 Argon scores 79.7% on Long-context reasoning (AA-LCR), against 74.7% for o3.
Latest release
Choose Gemini 4 Argon
Gemini 4 Argon is the newer release (October 2026, against Apr 16, 2025 for o3).
Monthly cost at three volumes
| Volume | Gemini 4 Argon | o3 | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $4.50 | $4.00 | o3, $0.50 less |
| Production: 20M input, 5M output tokens | $90.00 | $80.00 | o3, $10.00 less |
| Scale: 500M input, 100M output tokens | $2,000 | $1,800 | o3, $200.00 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Gemini 4 Argon | o3 | |
|---|---|---|
| Provider | OpenAI | |
| Category | Language models | Language models |
| Status | Generally available | Legacy |
| Headline price | $4.00 / 1M tokens | $3.50 / 1M tokens |
| Input | $2.00 / 1M tokens | $2.00 / 1M tokens |
| Output | $10.00 / 1M tokens | $8.00 / 1M tokens |
| Cached input | $0.10 / 1M tokens | $0.50 / 1M tokens |
| Context window | 1.05M | 200k |
| Max output | 66k | 100k |
| Released | October 2026 | Apr 16, 2025 |
| Knowledge cutoff | No data | June 2024 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | gemini-4-argon | o3 |
Benchmarks side by side
Leader in bold.
| Benchmark | Gemini 4 Argon | o3 |
|---|---|---|
| Humanity's Last Exam | 57.1% | 20.1% |
| Long-context reasoning (AA-LCR) | 79.7% | 74.7% |
| Intelligence Index | 52.6 | No data |
| SciCode | 61.8% | No data |
| Terminal-Bench Hard | No data | 37.1% |
| GPQA Diamond | No data | 82.7% |
| IFBench (instruction following) | No data | 71.4% |
| τ²-Bench (agentic tool use) | No data | 80.7% |
| MMMU-Pro (visual reasoning) | No data | 70.1% |
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 o3?
Choose Gemini 4 Argon for reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents and the latest release. Choose o3 for high-volume, cost-sensitive work and writing and code generation.
Which is cheaper, Gemini 4 Argon or o3?
o3 is 13% cheaper than Gemini 4 Argon at the headline price ($3.50 / 1M tokens vs $4.00 / 1M tokens).
Which has the larger context window, Gemini 4 Argon or o3?
Gemini 4 Argon reads more per request: 1.05M tokens against 200k.
What is the difference between Gemini 4 Argon and o3?
Gemini 4 Argon is made by Google and o3 by OpenAI. o3 is 13% cheaper than Gemini 4 Argon at the headline price ($3.50 / 1M tokens vs $4.00 / 1M tokens). Gemini 4 Argon reads more per request: 1.05M tokens against 200k. Gemini 4 Argon is the newer model (October 2026, against Apr 16, 2025).
How much do Gemini 4 Argon and o3 cost per month?
At 20 million input and 5 million output tokens a month, Gemini 4 Argon costs $90.00 and o3 costs $80.00, at standard rates.
Which is newer, Gemini 4 Argon or o3?
Gemini 4 Argon was released on October 2026 and o3 on Apr 16, 2025.