Pick models to compare
Click a model to add it, then ask your question below.
Intelligence: the Artificial Analysis Intelligence Index at each model's highest effort. Models without a score yet sit in the lane under the chart, placed by price. Lines at $2 blended and the median score (39.5).
GPT-6 AstravsMuse Spark Open
Send one prompt to every model and read the answers side by side, with speed and cost for each.
Shareable link:
Before you run
Highlighted values are the best among your picks.
GPT-6 AstraOpen AI GPT-6 Astra is OpenAI's most capable model for complex reasoning, coding, computer use, research, and document creation. | Muse Spark OpenMeta· open weightsNEW Open Llama multimodal model for image understanding and text reasoning | |
|---|---|---|
| Intelligence | ||
| Intelligence index | 52.7 | 38.9 |
| Price | ||
| Input, $ per 1M | $10 | $1.25 |
| Output, $ per 1M | $50 | $4.25 |
| Typical message (500 in / 250 out) | $0.0175 | $0.0017 |
| Repeated input, cached | $1 · 10× cheaper | $0.15 · 8× cheaper |
| Prompts over 200K tokens | $20 / $75 | Same price |
| Limits | ||
| Context window | 1.05M | 1.05M |
| Longest answer | 128K tokens | 1.05M tokens |
| Knowledge cutoff | Apr 2026 | Jan 2026 |
| What it can take and do | ||
| Accepts | TextImagePDF | TextImage |
| Reasoning effort | Low · Med · High · X-high · Max | Low · Med · High · X-high |
| Tool use | Yes | Yes |
| Guaranteed JSON output | Yes | Yes |
| Availability | ||
| Released | 4 Sept 2026 | 15 Oct 2026 |
| Open weights | No | Yes, can self-host |
| API providers offering it | 34 | 12 |