AI models & inference

gpt-5.4: OpenAI GPT 5.4 (<=272K input tokens) chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 1.25/7.5, Standard 2.5/15.0, Fast 5.0/30.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high, xhigh (model gpt-5.4:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5.4-nano: OpenAI GPT 5.4 Nano chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 0.1/0.625, Standard 0.2/1.25; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high, xhigh (model gpt-5.4-nano:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5.4-mini: OpenAI GPT 5.4 Mini chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 0.375/2.25, Standard 0.75/4.5, Fast 1.5/9.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high, xhigh (model gpt-5.4-mini:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5.4-long: OpenAI GPT 5.4 (>272K input tokens) chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 2.5/11.25, Standard 5.0/22.5; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high, xhigh (model gpt-5.4-long:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5.2: OpenAI GPT 5.2 chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 0.875/7.0, Standard 1.75/14.0, Fast 3.5/28.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high, xhigh (model gpt-5.2:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5.1: OpenAI GPT 5.1 chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 0.625/5.0, Standard 1.25/10.0, Fast 2.5/20.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: none, low, medium, high (model gpt-5.1:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-5-mini: OpenAI GPT 5 Mini chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 0.125/1.0, Standard 0.25/2.0, Fast 0.45/3.6; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: minimal, low, medium, high (model gpt-5-mini:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-4o: OpenAI GPT 4o chat completions, paid per call in USDC. Per 1M tokens in/out: Standard (default) 2.5/10.0, Fast 4.25/17.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-4o-mini: OpenAI GPT 4o Mini chat completions, paid per call in USDC. Per 1M tokens in/out: Standard (default) 0.15/0.6, Fast 0.25/1.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Empty answers are free. Rates: https://openai.mm.family/x402/pricing

gpt-4o-mini-tts: OpenAI GPT 4o Mini TTS text to speech, paid per call in USDC. OpenAI list $12 per 1M audio tokens (quoted at 4 per character) plus $0.6 per 1M text tokens, plus $0.0005 (Base) or $0.0005 (Solana) per call; up to 4096 characters; accepts instructions. Returns the audio bytes (mp3 by default). Rates: https://openai.mm.family/x402/pricing

gpt-4.1-nano: OpenAI GPT 4.1 Nano chat completions, paid per call in USDC. Per 1M tokens in/out: Standard (default) 0.1/0.4, Fast 0.2/0.8; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Empty answers are free. Rates: https://openai.mm.family/x402/pricing

chat-latest: OpenAI Chat Latest chat completions, paid per call in USDC. Per 1M tokens in/out: Standard (default) 5.0/30.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Empty answers are free. Rates: https://openai.mm.family/x402/pricing

OpenAI embeddings (text-embedding-3-large, text-embedding-3-small, text-embedding-ada-002), paid per call in USDC. OpenAI list $0.13 / $0.02 / $0.1 per 1M input tokens, plus $0.0005 (Base) or $0.0005 (Solana) per call; minimum $0.001 per call. Standard OpenAI body (model, input, dimensions, encoding_format). One endpoint per model: /x402/v1/models/<key>/embeddings. Rates: https://openai.mm.family/x402/pricing

OpenAI text to speech (gpt-4o-mini-tts, tts-1, tts-1-hd), paid per call in USDC. OpenAI list $15 / $30 per 1M characters (tts-1 / tts-1-hd) or $12 per 1M audio tokens (gpt-4o-mini-tts, quoted at 4 per character), plus $0.0005 (Base) or $0.0005 (Solana) per call; up to 4096 characters. Standard OpenAI body (input, voice, response_format, speed). Returns the audio bytes. One endpoint per model: /x402/v1/models/<key>/audio/speech. Rates: https://openai.mm.family/x402/pricing

gpt-image-1-mini: OpenAI GPT Image 1 Mini image generation, paid per call in USDC. OpenAI list $18.4 per 1M image tokens (1024x1024: low 272, medium 1056, high 4160 tokens), text in $2 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

gpt-image-2: OpenAI GPT Image 2 image generation, paid per call in USDC. OpenAI list $30 per 1M image tokens (1024x1024: low 196, medium 1756, high 7024 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

gpt-image-2.5-sunburst: OpenAI GPT Image 2.5 Sunburst image generation, paid per call in USDC. OpenAI list $30 per 1M image tokens (1024x1024: low 196, medium 439, high 1756 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

gpt-image-2.5-flare: OpenAI GPT Image 2.5 Flare image generation, paid per call in USDC. OpenAI list $30 per 1M image tokens (1024x1024: low 196, medium 439, high 1756 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

gpt-image-1.5: OpenAI GPT Image 1.5 image generation, paid per call in USDC. OpenAI list $32 per 1M image tokens (1024x1024: low 272, medium 1056, high 4160 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

gpt-image-1: OpenAI GPT Image 1 image generation, paid per call in USDC. OpenAI list $40 per 1M image tokens (1024x1024: low 272, medium 1056, high 4160 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

chatgpt-image-latest: OpenAI ChatGPT Image Latest image generation, paid per call in USDC. OpenAI list $32 per 1M image tokens (1024x1024: low 272, medium 1056, high 4160 tokens), text in $5 per 1M, plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. Rates: https://openai.mm.family/x402/pricing

Transkription bis 10 Min Audio, Whisper large-v3-turbo, Deutsch optimiert, verarbeitet in Deutschland. Speech-to-text for audio up to 10 min (mp3, m4a, ogg, wav, mp4), German-optimised, processed in Germany. JSON body with audio_url or audio_base64. Longer files are rejected before payment settles. Voraussetzung/required: accept_terms_hash, business_name (B2B) – /legal/terms.json

Transkription mit Sprechertrennung bis 2 Min Audio (pyannote + Whisper), verarbeitet in Deutschland. Speech-to-text with speaker diarization for audio up to 2 min, German-optimised, processed in Germany. Voraussetzung/required: accept_terms_hash, business_name (B2B) – /legal/terms.json

Transkription bis 2 Min Audio, Whisper large-v3-turbo, Deutsch optimiert, verarbeitet in Deutschland. Speech-to-text for audio up to 2 min (mp3, m4a, ogg, wav, mp4), German-optimised, processed in Germany. JSON body with audio_url or audio_base64. Longer files are rejected before payment settles. Voraussetzung/required: accept_terms_hash, business_name (B2B) – /legal/terms.json

Buy a 24-hour durable callback inbox. Ordered events, acknowledgment and replay. See /llms.txt for required recovery headers.

Validate caller-supplied JSON against Forest bounded JSON Schema subset v1 before an agent trusts or forwards structured output. Returns deterministic machine-readable violations with stable paths; performs no network request, remote $ref resolution, regex evaluation, model inference or mutation. Base mainnet USDC

Deep-compare two caller-supplied JSON values with deterministic object-key ordering and explicit index-based array semantics. Returns bounded added, removed and changed paths with primitive before/after values when safe; performs no network request, model inference, persistence or mutation. Base mainnet USDC

Llama API - pay per call, no API key. OpenAI-format chat completions on meta-llama/llama-4-maverick, pinned to DeepInfra for reliability. You sign a fixed price computed from your max_tokens; unused tokens are not refunded. 20s server-side timeout - never charged if it fires; set your client timeout to 30s. Try GET /llm/llama/sample.

Call OpenAI's gpt-4.1 via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.09 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output.

Call OpenAI's gpt-5.6-luna via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.06 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output.