vs
GPT-6 Astra vs Gemini 4 Argon: Flagship Models
GPT-6 Astra is OpenAI's flagship model, launched in September 2026 for demanding reasoning, coding, computer use and science work. Gemini 4 Argon is Google's newest flagship reasoning model, generally available in the Gemini API since October 13, 2026. Both have about 1M tokens of context; Argon accepts more input types and costs less per token.
The short answer
Pick GPT-6 Astra if you work in ChatGPT Work or Codex and need computer use for apps without APIs, and capability matters more than token cost. Pick Gemini 4 Argon if you need video, audio and PDF input or a lower API price, noting that its introductory price doubles on December 1, 2026.
Side by sideGPT-6 Astra vs Gemini 4 Argon
| GPT-6 Astra | Gemini 4 Argon | |
|---|---|---|
| Provider | OpenAI | Google DeepMind |
| Released | Sep 3, 2026 | Oct 13, 2026 |
| Context window | 1.05M | 1.05M |
| API price | $10 / 1M input tokens, $1 / 1M cached input tokens, $50 / 1M output tokens | $2.00 / 1M input tokens and $10.00 / 1M output tokens (incl. thinking) through Nov 30, 2026; $4.00 input / $20.00 output from Dec 1, 2026. No free API tier. |
| Open weights | No | No |
| Consumer access | ChatGPT Work and Codex: Pro, Enterprise and Business Premium at launch; rolled out to Plus and Business over the following days (Enterprise admins must enable it) | Gemini app: rolling out globally for Google AI Pro & Ultra subscribers (from 2026-10-13). |
| Best for | The hardest multi-step reasoning, coding, computer-use and science work where cost per token matters less than capability. | Long, complex software engineering, agentic, math, science and enterprise knowledge-work tasks where top-tier reasoning matters more than cost. |
| Terminal-Bench 4.0 | 57.9% | 57.4% |
Facts in this table come from the verified profile of each product.
Key differences
$10 / 1M input tokens, $1 / 1M cached input tokens, $50 / 1M output tokens.
$2.00 input / $10.00 output per 1M tokens through Nov 30, 2026; $4.00 / $20.00 from Dec 1. No free API tier.
1.05M tokens (922K max input, 128K max output).
1,048,576 tokens shared input/output; up to 1M output with long decode.
Text and image in; text out.
Text, image, video, audio and PDF in; text out.
ChatGPT Work and Codex: Pro, Enterprise and Business Premium first, then Plus and Business.
Gemini app, rolling out globally to Google AI Pro and Ultra subscribers from October 13, 2026.
Terminal-Bench 4.0 57.9% and Humanity's Last Exam (with tools) 57.2% per Anthropic's table; OSWorld 2.0 73.5%.
Vals Index 68.9%, DeepSWE v1.1 77.9%, Terminal-bench 4.0 57.4%, GraphWalks 84.2% (Google-reported).
Computer use inside ChatGPT Work and Codex; low-to-max reasoning effort with Fast/Ultrafast modes.
Search grounding, code execution, function calling and computer use (preview) in the Gemini API.
Most expensive OpenAI API model; rated Critical for cybersecurity capability, so extra safeguards apply.
Text output only, no Live API; trails on some rows of Google's own table.
Choose GPT-6 Astra if…
- You need an agent that operates apps without APIs inside ChatGPT Work or Codex.
- You want adjustable reasoning effort plus Fast and Ultrafast modes.
- You need up to 128K output tokens with cached-input pricing.
- You already have ChatGPT Pro, Plus or Business access.
Choose Gemini 4 Argon if…
- You need to send video, audio or PDF files directly.
- Your budget favors $2.00 / 1M input tokens before December 1.
- You work with very long documents and need strong long-context retrieval.
- You subscribe to Google AI Pro or Ultra.
Frequently asked questions
Is Gemini 4 Argon cheaper than GPT-6 Astra?
Yes on listed API prices. Argon costs $2.00 input and $10.00 output per 1M tokens through Nov 30, 2026, then $4.00 and $20.00. Astra costs $10 input, $1 cached input and $50 output per 1M tokens.
Which model scores higher on Terminal-Bench 4.0?
Astra is listed at 57.9% (from Anthropic's comparison table) and Argon at 57.4% (from Google's table). The figures come from different publishers, so treat the gap as indicative rather than a controlled head-to-head result.
Where can consumers use GPT-6 Astra and Gemini 4 Argon?
Astra is in ChatGPT Work and Codex, starting with Pro, Enterprise and Business Premium and then Plus and Business. Argon is rolling out in the Gemini app to Google AI Pro and Ultra subscribers from October 13, 2026.
More comparisons
All comparisons
vs
ChatGPT vs Claude
ChatGPT from OpenAI and Claude from Anthropic are general-purpose AI assistants, each with a free plan and paid tiers. ChatGPT covers a…
vs
ChatGPT vs Google Gemini
ChatGPT from OpenAI and Google Gemini are general-purpose AI assistants with free plans and several paid tiers. The main difference is ecosystem:…
vsClaude vs Google Gemini
Claude from Anthropic and Google Gemini are AI assistants with free and paid plans. Claude focuses on writing, document analysis and coding…
vs
ChatGPT vs Perplexity
ChatGPT is OpenAI's general-purpose assistant for chat, writing, coding, images and research. Perplexity is an answer engine that responds with inline source…
vs
Cursor vs GitHub Copilot
Cursor is an AI-first code editor and coding agent from Anysphere, now part of SpaceX. GitHub Copilot adds suggestions, chat, an agent…
vs
Claude Code vs OpenAI Codex
Claude Code and OpenAI Codex are agentic coding tools that read a codebase, edit files and run tasks. Claude Code comes with…