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).
Claude Fable 5.1vsGPT OSS 120B
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.
Claude Fable 5.1Anthropic Claude model for demanding reasoning and long-horizon agentic work | GPT OSS 120BOpen AI· open weights Open GPT reasoning model for self-hosted agents and controllable deployments | |
|---|---|---|
| Intelligence | ||
| Intelligence index | 53.4 | 11.6 |
| Price | ||
| Input, $ per 1M | $10 | $0.10 |
| Output, $ per 1M | $50 | $0.50 |
| Typical message (500 in / 250 out) | $0.0175 | $0.00017 |
| Repeated input, cached | $0.25 · 40× cheaper | $0.10 |
| Prompts over 200K tokens | Same price | Same price |
| Limits | ||
| Context window | 1M | 131K |
| Longest answer | 128K tokens | 131K tokens |
| Knowledge cutoff | Jun 2026 | Not published |
| What it can take and do | ||
| Accepts | TextImagePDF | Text |
| Reasoning effort | Low · Med · High · X-high · Max | Low · Med · High |
| Tool use | Yes | Yes |
| Guaranteed JSON output | Yes | Yes |
| Availability | ||
| Released | 1 Sept 2026 | 5 Aug 2025 |
| Open weights | No | Yes, can self-host |
| API providers offering it | 36 | 44 |