AI model comparison
Grok 4.7 vs GPT-6 Astra
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
xAI
Grok 4.7
Grok 4.7 is SpaceXAI's flagship model for coding, agentic tasks, and knowledge work, succeeding Grok 4.6.
- Input / 1M
- $2
- Output / 1M
- $6
- Context
- 500K
OpenAI
GPT-6 Astra
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work.
- Input / 1M
- $10
- Output / 1M
- $50
- Context
- 1.05M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
Grok 4.7
6.4x cheaper for a typical chat
Higher intelligence score
GPT-6 Astra
52.7 vs 46.4 on Artificial Analysis
Larger context window
GPT-6 Astra
1.05M vs 500K tokens
Newer release
Grok 4.7
Released September 21, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
GPT-6 Astra52.7Coding index
GPT-6 Astra76.9Agentic index
GPT-6 Astra51Pricing
Grok 4.7 vs GPT-6 Astra API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | GPT-6 Astra | |
|---|---|---|
| Input tokensPer 1M tokens | $2 | $10 |
| Output tokensPer 1M tokens | $6 | $50 |
| Cached input (read)Per 1M tokens | $0.50 | $1 |
| Cache writePer 1M tokens | Not available | $12.50 |
| Long-context pricingPer 1M tokens, for very long prompts | $4 in / $12 out above 200K | $20 in / $75 out above 272K |
| Web searchPer request | $0.005 | $0.01 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
GPT-6 Astra$45Coding task
30K in, 4K out
GPT-6 Astra$500$230 cachedLong document summary
150K in, 2K out
GPT-6 Astra$1600$250 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | GPT-6 Astra | |
|---|---|---|
| Context window | 500K tokens | 1.05M tokens |
| Max output | 450K tokens | 128K tokens |
| Input types | File, Image, Text | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Extra high, High, Medium, Low | Max, Extra high, High, Medium, Low |
| Default reasoning effort | High | Medium |
| Release date | September 21, 2026 | September 4, 2026 |
Features
Supported features
API features available for each model.
| Metric | GPT-6 Astra | |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Not supported |
| Stop sequences | Not supported | Not supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Grok 4.7 vs Claude Opus 5.5
- Grok 4.7 vs Claude Sonnet 5.5
- Grok 4.7 vs GPT-6.1 Sol
- Grok 4.7 vs Muse Spark 1.3
- Grok 4.7 vs GPT-6 Sol
- Grok 4.7 vs GPT-5.6 Sol
- Grok 4.7 vs MiMo-V2.6-Pro
- Grok 4.7 vs Qwen3.8 Max (0902)
- Grok 4.7 vs GLM 5.3
- Grok 4.7 vs Grok 4.6
- Grok 4.7 vs Kimi K3
- Grok 4.7 vs Gemini 3.8 Flash
- Grok 4.7 vs Grok 4.5
GPT-6 AstraView full model details- GPT-6 Astra vs Claude Opus 5.5
- GPT-6 Astra vs Claude Sonnet 5.5
- GPT-6 Astra vs Claude Fable 5.1
- GPT-6 Astra vs GPT-6.1 Sol
- GPT-6 Astra vs Claude Opus 5
- GPT-6 Astra vs Claude Fable 5
- GPT-6 Astra vs Muse Spark 1.3
- GPT-6 Astra vs GPT-6 Sol
- GPT-6 Astra vs GPT-5.6 Sol
- GPT-6 Astra vs GLM 5.3
- GPT-6 Astra vs Kimi K3
- GPT-6 Astra vs GLM 5.3 Flash
- GPT-6 Astra vs Gemini 3.8 Flash
- GPT-6 Astra vs DeepSeek V4.1 Flash
- GPT-6 Astra vs MiMo-V2.6-Flash
- GPT-6 Astra vs Hy4 preview
- GPT-6 Astra vs GPT-6 Luna
- GPT-6 Astra vs DeepSeek V4 Flash 0731
- GPT-6 Astra vs Gemini 3.1 Pro Preview
Our take
Astra scores higher (52.7 vs 46.4) and has the bigger context window, so it is the better default for hard analysis and long documents. Grok 4.7 is cheaper and a closer match if you want a faster, more conversational flagship.
FAQ
Frequently asked questions
Is Grok 4.7 or GPT-6 Astra cheaper?
Grok 4.7 is cheaper for a typical chat (2K input tokens and 500 output tokens). Grok 4.7 costs $2 per 1M input tokens and $6 per 1M output tokens, while GPT-6 Astra costs $10 per 1M input tokens and $50 per 1M output tokens.
Which has a bigger context window, Grok 4.7 or GPT-6 Astra?
GPT-6 Astra supports up to 1.05M tokens of context, compared with 500K for Grok 4.7.
Is Grok 4.7 smarter than GPT-6 Astra?
On the Artificial Analysis Intelligence Index, Grok 4.7 scores 46.4 and GPT-6 Astra scores 52.7, putting GPT-6 Astra ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use Grok 4.7 and GPT-6 Astra at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Grok 4.7 and GPT-6 Astra answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Grok 4.7 and GPT-6 Astra at the same time. Compare the answers side by side and keep the best one.