Compare / Gemini 4 Argon vs GPT-6 Astra
Gemini 4 Argon vs GPT-6 Astra
Which is cheaper, which is more capable, and which does better at each kind of work, from 16 results on 2 sources that measured both models.
Results as of 8 October 2026 (catalogue release 2026-10-08-4199ce0620fe).
Gemini 4 Argon or GPT-6 Astra? The short answer
They score and cost about the same: pick on the results below that match your work.
- They score about the same on the Artificial Analysis Intelligence Index (52.6 and 52.7).
- Gemini 4 Argon is newer: released 30 Sep 2026, against 3 Sep 2026 for GPT-6 Astra.
- On third-party benchmarks, on the results both models have: Gemini 4 Argon does better for writing and sticking to the facts; GPT-6 Astra for agents and tool use.
At a glance
| Gemini 4 Argon | GPT-6 Astra | |
|---|---|---|
| Price per million tokens | Not on sale | $10.00 in · $50.00 out |
| Blended (3 in : 1 out) | – | $20.00 |
| Cheapest host, blended | – | $20.00 (Azure) |
| Cached input, per million | – | $1.00 cached input |
| Intelligence Index | 52.6 | 52.7 |
| Spring Prompt overall | – | 79 |
| Output speed, tokens a second | – | 52 |
| Context window | – | 1,050,000 tokens |
| Released | 30 Sep 2026 (newer) | 3 Sep 2026 |
| Weights | Closed | Closed |
| Developer based in | the US | the US |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Gemini 4 Argon | GPT-6 Astra |
|---|---|---|
| Product listingsTurning a sparse product feed and photos into listings that can go live | not measured | 1 of 20 |
| Decks from an analysisTurning a finished analysis into a deck you could present as it is | not measured | 1 of 19 |
| Marketing planningPlanning a year of ad spend without overspending | not measured | 1 of 19 |
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 3 of 165 | 4 of 164 |
| Professional workReal tasks from banking, consulting and law, business documents and freelance projects | not measured | 5 of 51 |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 3 of 199 | 3 of 198 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | 1 of 189 | 19 of 188 |
| Sticking to the factsSummarising without inventing things, and factual answers | 1 of 153 | 24 of 152 |
| Speed under pressureGood decisions against a real clock (fast chess) | not measured | 14 of 22 |
Every shared result
Each model's best result on every measure both have, grouped by benchmark, with the setting that produced it. The headline measures of each benchmark come first; the rest are under "Show all". Green marks the better value; where a source reports ranges that overlap, neither is marked.
| Measure | Gemini 4 Argon | GPT-6 Astra |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 3 results | ||
| Overall · TextArena rating, higher is better | 1,525high reasoning | 1,477max reasoning |
| Overall · Text factualityArena rating, higher is better | 1,511high reasoning | 1,466max reasoning |
| Business, management and finance · TextArena rating, higher is better | 1,522high reasoning | 1,473max reasoning |
| Artificial Analysis reported by Artificial Analysis · 3 results | ||
| Artificial Analysis Intelligence Indexindex score, higher is better | 52.6high reasoning | 52.7max reasoning |
| Humanity's Last Exam% of questions, higher is better | 57.1%high reasoning | 54.7%max reasoning |
| Terminal-Bench 4.0% of tasks, higher is better | 57.1%high reasoning | 59.6%xhigh reasoning |
Show all 16 results (10 more)
| Measure | Gemini 4 Argon | GPT-6 Astra |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 8 results | ||
| Confirmed task success · AgentIPS effect estimate, higher is better | 0.15high reasoning, arena agent | 0.13max reasoning, arena agent |
| Creative writing · TextArena rating, higher is better | 1,519high reasoning | 1,449max reasoning |
| Expert prompts · TextArena rating, higher is better | 1,539high reasoning | 1,517max reasoning |
| Instruction following · TextArena rating, higher is better | 1,528high reasoning | 1,474max reasoning |
| Praise over complaint · AgentIPS effect estimate, higher is better | 0.28high reasoning, arena agent | 0.35max reasoning, arena agent |
| Steerability · AgentIPS effect estimate, higher is better | 0.13high reasoning, arena agent | 0.08max reasoning, arena agent |
| Tool grounding · AgentIPS effect estimate, higher is better | 0.00high reasoning, arena agent | 0.00max reasoning, arena agent |
| Writing, literature and language · TextArena rating, higher is better | 1,522high reasoning | 1,465max reasoning |
| Artificial Analysis reported by Artificial Analysis · 2 results | ||
| Long-context reasoning (AA-LCR)% of questions, higher is better | 79.7%high reasoning | 80.7%max reasoning |
| SciCode% of problems, higher is better | 61.8%high reasoning | 56.5%max reasoning |
Quick answers
Is Gemini 4 Argon better than GPT-6 Astra?
They score and cost about the same: pick on the results below that match your work.
Run Gemini 4 Argon and GPT-6 Astra on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.