{"id":"llm-deepseek-v4-flash","name":"DeepSeek V4 Flash","description":"DeepSeek's low-latency V4 model — ultra-low-cost reasoning and coding with 1M context","endpoint":"https://x402engine.app/api/llm/deepseek-v4-flash","method":"POST","price":"$0.002004","pricing":{"type":"request_quote","minimumGrossMargin":0.3,"quoteEndpoint":"/api/llm/deepseek-v4-flash/quote","settlement":"prepaid","priceDescription":"Starting price for a one-token text request; POST the exact body to the quote endpoint or read PAYMENT-REQUIRED. Media reserves full context. No automatic refunds after settlement.","verifiedAt":"2026-09-05","upstreamRates":{"prompt":"0.00000008386","completion":"0.00000016772","input_cache_read":"0.000000016772"}},"capabilities":{"available":true,"inputModalities":["text"],"outputModalities":["text"],"streaming":true,"supportedParameters":["frequency_penalty","include_reasoning","logit_bias","logprobs","max_completion_tokens","max_tokens","min_p","presence_penalty","reasoning","reasoning_effort","repetition_penalty","response_format","seed","stop","structured_outputs","temperature","tool_choice","tools","top_a","top_k","top_logprobs","top_p"],"contextWindow":1024000,"maxOutputTokens":384000,"reasoning":{"mandatory":false,"supported_efforts":["xhigh","high"],"default_effort":"high"}},"requiresPayment":true,"paymentOptions":[{"scheme":"exact","price":"$0.002004","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","amount":"2004","payTo":"0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}},{"scheme":"exact","price":"$0.002004","network":"eip155:4326","asset":"0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7","amount":"2004000000000000","payTo":"0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629","maxTimeoutSeconds":300,"extra":{"name":"USDm","version":"2"}},{"scheme":"exact","price":"$0.002004","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","amount":"2004","payTo":"Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa","maxTimeoutSeconds":300,"extra":{"feePayer":"GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"}}],"message":"Use POST /api/llm/deepseek-v4-flash with an x402 payment to call this service."}