Compare models
Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.
- GPT-6 AstraOpenAIRemove
- Claude Fable 5.1AnthropicRemove
- DeepSeek V4.1 FlashDeepSeekRemove
- Sonar ReasoningPerplexityRemove
4 is the maximum. Remove one to add another.
| Attribute | GPT-6 Astragpt-6-astra | Claude Fable 5.1claude-fable-5.1 | DeepSeek V4.1 Flashdeepseek-v4.1-flash | Sonar Reasoningsonar-reasoning |
|---|---|---|---|---|
| Pricing | ||||
| Input | $10.00 / 1M | $10.00 / 1M | $0.30 / 1M | $1.00 / 1M |
| Output | $50.00 / 1M | $50.00 / 1M | $1.20 / 1M | $5.00 / 1M |
| Cache Write (5m) | $10.00 / 1M | $12.50 / 1M | $0.30 / 1M | $1.00 / 1M |
| Cache Write (1h) | $10.00 / 1M | $20.00 / 1M | $0.30 / 1M | $1.00 / 1M |
| Cache Read | $10.00 / 1M | $1.00 / 1M | $0.30 / 1M | $1.00 / 1M |
| Web Search | $0 / 1M | $0 / 1M | $0 / 1M | $0 / 1M |
| Context | ||||
| Max context | 1M | 1M | 1M | 127K |
| Max output | N/A | N/A | N/A | N/A |
| Capabilities | ||||
| Vision | Yes | Yes | Yes | No |
| Function Calling | Yes | Yes | Yes | No |
| JSON Mode | Yes | Yes | Yes | No |
| Streaming | Yes | Yes | Yes | No |
| Catalogue | ||||
| Provider | OpenAI | Anthropic | DeepSeek | Perplexity |
| Category | chat | chat | chat | chat |
| Charge type | Pay As You Go | Pay As You Go | Pay As You Go | Pay As You Go |
| Released | — | — | — | — |
| Description | ||||
| Summary | GPT-6 Astra is OpenAI's flagship model for demanding end-to-end professional work, designed for advanced analysis, software engineering, deep research, scientific tasks, and document creation. It is particularly strong in long-horizon agentic workflows, including tasks that require sustained reasoning, tool orchestration, and computer and browser use, making it well suited for complex autonomous workflows and production-grade knowledge work. | Claude Fable 5.1 is an upgraded version of Fable 5, delivering broad improvements with particularly strong gains in agentic coding, long-running workflows, and professional knowledge work. It excels at large code refactors, front-end and visual code generation, financial analysis, and complex analytical tasks. Compared with Fable 5, it also produces more concise plans and summaries while maintaining strong performance across extended tasks, making it a natural upgrade for existing Fable workflows and a strong option alongside Opus 5 for reasoning-intensive applications. | DeepSeek V4.1 Flash is a cost-efficient sparse Mixture-of-Experts (MoE) model in DeepSeek's V4.1 family, optimized for coding, reasoning, and agentic workflows. Despite its efficiency-focused positioning, DeepSeek reports that it surpasses the previous V4 Pro in performance, inference speed, and overall task completion time. The model is particularly strong at long-horizon, multi-step execution, making it well suited for coding agents, complex problem solving, and autonomous workflows that must reliably carry tasks through to completion. | — |