{"data":{"id":"black-forest-labs/flux.2-klein-4b","provider_id":"black-forest-labs","name":"Black Forest Labs: FLUX.2 Klein 4B","modalities":["text","image"],"context_window":40960,"family":"flux.2-klein-4b","status":"active","description":"FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality. Pricing is based on the output...","architecture":{"modality":"text+image->image","input_modalities":["text","image"],"output_modalities":["image"],"tokenizer":"Other","instruct_type":null},"supported_parameters":["seed"],"created_at":1768429228,"canonical_slug":"black-forest-labs/flux.2-klein-4b","catalog_source":"openrouter","host_id":"openrouter","host_name":"OpenRouter","creator_id":"black-forest-labs","creator_name":"Black Forest Labs","cheapest_provider":"black-forest-labs","cheapest_provider_name":"Black Forest Labs","cheapest_price":0,"savings_pct":null,"savings_basis":null,"provider":{"id":"black-forest-labs","name":"Black Forest Labs","website":"https://bfl.ai","categories":["text","image","video"],"docs_url":"https://docs.bfl.ai","notes":"Live OpenRouter feed. Prices are OpenRouter list rates, not a contract with the origin lab.","role":"lab"},"prices":[{"id":59993,"model_id":"black-forest-labs/flux.2-klein-4b","unit":"image_token","input_per_1m_usd":3.41796875,"output_per_1m_usd":null,"flat_usd":null,"currency":"USD","effective_at":"2026-10-08","source_url":"https://openrouter.ai/black-forest-labs/flux.2-klein-4b","notes":"OpenRouter list rate. Token fields are USD per token converted to per 1M. Flat image, request, and web_search fields are USD per unit and are not rescaled. Image tokens 3.417969/1M. Prompt and completion were zero, so this is not stored as a $0 text price.","last_verified_at":"2026-10-08T17:11:32.756Z","source":"openrouter","confidence":"official","cache_read_per_1m_usd":null,"cache_write_per_1m_usd":null,"cache_write_1h_per_1m_usd":null,"pricing_detail":{"image_output_per_1m_usd":3.41796875},"long_context_override":false}]}}