Compare Anthropic: Claude Sonnet 4.5 (Anthropic) and FLUX.2 Flex (Black Forest Labs) by price, context, capabilities, and latency.
Side by side
Compare price, provider, context, capabilities, latency, and source basis.
| Model | Provider | Input | Output | Context | Capabilities | Best for | Latency | Status | Source |
|---|---|---|---|---|---|---|---|---|---|
| Anthropic: Claude Sonnet 4.5anthropic/claude-sonnet-4.5 | Anthropic | $3 / 1M tokens | $15 / 1M tokens | 1M | StreamingTool callingJSON modeVision | image understanding, multimodal chat | 1000-3000ms | Catalog | Platform curated |
| FLUX.2 Flexblack-forest-labs/FLUX.2-flex | Black Forest Labs | $0.2 / image | — | — | StreamingVision | image understanding, multimodal chat | 1000-3000ms | Catalog | Platform curated |
FAQ
FLUX.2 Flex is cheaper ($0.2 / image per image) vs Anthropic: Claude Sonnet 4.5 ($3 / 1M tokens input / $15 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.
Anthropic: Claude Sonnet 4.5 is larger (1M tokens) vs — tokens.
Both target Vision. Pick FLUX.2 Flex to optimize cost, or Anthropic: Claude Sonnet 4.5 for the longer context window. Test both on real prompts before committing production traffic.