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Expositio fidei

Marcellus Ancyranus · khazarzar

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Summary

The Expositio fidei is a systematic exposition of Nicene orthodoxy attributed to Marcellus of Ancyra, composed around 340 CE. It defends the homoousian doctrine against Arian and Sabellian interpretations through doctrinal argument and scriptural citation. The text survives only in fragments preserved by later authors, notably Eusebius of Caesarea and Epiphanius of Salamis; no complete manuscript is extant. Its register is polemical and doctrinal, reflecting the theological controversies of the mid-fourth century. The work was cited by both supporters and opponents of Marcellus in the 4th–5th centuries but was never included in later patristic collections as a standard authority. The edition is based on reconstructed fragments, so the original sequence and completeness of the argument cannot be verified.

The Expositio fidei is significant as a key witness to the development of Nicene orthodoxy in the mid-fourth century, particularly in the Greek East. It reflects Marcellus's attempt to articulate a non-subordinationist trinitarian theology while avoiding Sabellianism, and it was cited in later debates about the Son's likeness to the Father. The work's fragmentary survival illustrates the challenges of reconstructing lost patristic texts from quotations in later authors.

Historical context

The Expositio fidei was likely written by Marcellus of Ancyra around 340 CE, after his deposition at the Council of Constantinople (336) and before his condemnation at the Council of Serdica (343). Marcellus was a prominent defender of Nicene orthodoxy in the Greek East, but his theology was controversial for its alleged Sabellian tendencies. The work was composed in Greek, probably in Ancyra or a nearby region, within a community engaged in the post-Nicene trinitarian debates. The text survives only in fragments quoted by later authors, especially Eusebius of Caesarea (who opposed Marcellus) and Epiphanius of Salamis (who preserved some material). No complete manuscript is extant, and the original sequence and completeness of the argument cannot be verified. The work was cited in the 4th–5th centuries by both supporters and opponents of Marcellus, but it was never included in later Greek or Latin patristic collections as a standard authority. Its transmission is thus fragmentary and mediated through hostile or selective sources.

Apparatus · what the pipeline recorded

Annotation and terms

30 commentary units 9 scripture5 term5 background4 caution3 structure2 reception2 parallel 0 derived notes 9 open questions 5 narrative
What the kinds mean

Pipeline notes

  • coverageNo English translation could be identified: a language model asked twice could not name one, though it could not rule one out either. That is not proof that none exists — translations in dissertations, recent books and other modern languages are easily missed.
  • limitThe English is a machine draft produced passage by passage from the transcribed Coptic; no human has verified it. The commentary is model-written and cites only keys the pipeline could resolve.
  • registerRegister: commentary in ancient Greek; the English keeps the liturgical formulae and the vocatives rather than normalising them.
  • structurePassages: 5 narrative.
  • sourceSource edition: khazarzar — Migne PG text (public domain); khazarzar host and the digitising project state no licence for this layer

Term index

CopticRenderingCountFirst
no glossary terms recorded
khazarzar-marcellus-ancyranus-expositio-fidei:1 · narrativemedium
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Τοῦ Ἀθανασίου, ἀρχιεπισκόπου Ἀλεξανδρείας, ἔκθεσις πίστεως. Πιστεύομεν εἰς ἕνα ἀγέννητον θεόν, πατέρα παντοκράτορα, πάντων ποιητὴν ὁρατῶν τε καὶ ἀοράτων, τὸν ἔχοντα ἀφ' ἑαυτοῦ τὸ εἶναι. καὶ εἰς ἕνα μονογενῆ λόγον, σοφίαν, υἱόν, ἐκ τοῦ πατρὸς ἀνάρχως καὶ ἀϊδίως γεγεννημένον, λόγον δὲ οὐ προφορικόν, οὐκ ἐνδιάθετον, οὐκ ἀπόρροιαν τοῦ τελείου, οὐ τμῆσιν τῆς ἀπαθοῦς φύσεως οὔτε προβολήν, ἀλλ' υἱὸν αὐτοτελῆ, ζῶντά τε καὶ ἐνεργοῦντα, τὴν ἀληθινὴν εἰκόνα τοῦ πατρὸς ἰσότιμον καὶ ἰσόδοξον. "τοῦτο γάρ ἐστι", φησί, "τὸ θέλημα τοῦ πατρός," "ἵνα καθὼς τιμῶσι τὸν πατέρα οὕτω τιμῶσι καὶ τὸν υἱόν." θεὸν ἀληθινὸν ἐκ θεοῦ ἀληθινοῦ, ὥς φησιν Ἰωάννης ἐν καθολικαῖς· "καὶ ἐσμὲν ἐν τῷ ἀληθινῷ, ἐν τῷ υἱῷ αὐτοῦ Ἰησοῦ Χριστοῦ. οὗτός ἐστιν ὁ ἀληθινὸς θεὸς καὶ ζωὴ αἰώνιος." παντοκράτορα ἐκ παντοκράτορος· πάντων γάρ, ὧν ἄρχει ὁ πατὴρ καὶ κρατεῖ, ἄρχει καὶ κρατεῖ. ὅλος ἐξ ὅλου. ὅμοιος τῷ πατρὶ ὢν ὥς φησιν ὁ κύριος· "ὁ ἐμὲ ἑωρακὼς ἑώρακε τὸν πατέρα." ἐγεννήθη δὲ ἀνεκφράστως καὶ ἀπερινοήτως· "τὴν γὰρ γενεὰν αὐτοῦ τίς διηγήσεται;" ἀντὶ τοῦ οὐδείς. ὃς ἐπὶ συντελείᾳ τῶν αἰώνων κατελθὼν ἐκ τῶν κόλπων τοῦ πατρός, ἐκ τῆς ἀχράντου παρθένου Μαρίας τὸν ἡμέτερον ἀνείληφεν ἄνθρωπον, Χριστὸν Ἰησοῦν, ὃν ὑπὲρ ἡμῶν παθεῖν παρέδωκεν ἰδίᾳ προαιρέσει, ὥς φησιν ὁ κύριος· "οὐδεὶς αἴρει τὴν ψυχήν μου ἀπ' ἐμοῦ.
English
Of Athanasius, Archbishop of Alexandria, Exposition of the Faith. We believe in one unbegotten God, Father Almighty, maker of all things visible and invisible, who has his being from himself. And in one only-begotten Logos, Wisdom, Son, born from the Father without beginning and eternally, a Logos not prophoric, not endiathetic, not an emanation from the perfect, not a division of the impassible nature, nor a projection, but a self-complete Son, living and active, the true image of the Father, equal in honor and equal in glory. "For this," he says, "is the will of the Father," "that just as they honor the Father, so they also honor the Son." True God from true God, as John says in the Catholic Epistles: "And we are in the true one, in his Son Jesus Christ. This is the true God and eternal life." Almighty from Almighty; for of all things over which the Father rules and holds sway, he also rules and holds sway. Whole from whole. Being like the Father, as the Lord says: "He who has seen me has seen the Father." He was born ineffably and inconceivably; "for who shall recount his generation?" meaning no one. Who at the consummation of the ages, descending from the bosom of the Father, from the immaculate Virgin Mary took up our humanity, Christ Jesus, whom he delivered to suffer for us by his own choice, as the Lord says: "No one takes my soul from me.
khazarzar-marcellus-ancyranus-expositio-fidei:2 · narrativemedium
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ἐξουσίαν ἔχω θεῖναι αὐτὴν καὶ ἐξουσίαν ἔχω πάλιν λαβεῖν αὐτήν." ἐν ᾧ ἀνθρώπῳ σταυρωθεὶς καὶ ἀποθανὼν ὑπὲρ ἡμῶν ἀνέστη ἐκ νεκρῶν, ἀνελήφθη εἰς οὐρανούς, ἀρχὴ ὁδῶν κτισθεὶς ἡμῖν ἐν τῇ γῇ ὢν ἡμῖν ἔδειξεν ἐκ σκότους φῶς, σωτηρίαν ἐκ πλάνης, ζωὴν ἐκ νεκρῶν, εἴσοδον ἐν τῷ παραδείσῳ, ἐξ οὗ ἐκβέβλητο Ἀδάμ, εἰς ὃν πάλιν εἰσῆλθε διὰ τοῦ ληστοῦ, ὡς εἶπεν ὁ κύριος· "σήμερον μετ' ἐμοῦ ἔσῃ ἐν τῷ παραδείσῳ," εἰς ὃν καὶ ὁ Παῦλος εἰσῄει· ἄνοδόν τε εἰς οὐρανούς, "ὅπου πρόδρομος εἰσῆλθεν ὑπὲρ ἡμῶν" ὁ κυριακὸς ἄνθρωπος, ἐν ᾧ μέλλει κρίνειν ζῶντας καὶ νεκρούς. Πιστεύομεν ὁμοίως εἰς τὸ πνεῦμα τὸ ἅγιον, τὸ πάντα ἐρευνῶν "καὶ τὰ βάθη τοῦ θεοῦ," ἀναθεματίζοντες τὰ παρὰ τοῦτο φρονοῦντα δόγματα. οὔτε γὰρ υἱοπάτορα φρονοῦμεν ὡς οἱ Σαβέλλιοι λέγοντες μονοούσιον καὶ οὐχ ὁμοούσιον καὶ ἐν τούτῳ ἀναιροῦντες τὸ εἶναι υἱόν. οὔτε τὸ παθητὸν σῶμα ὃ ἐφόρεσε διὰ τὴν τοῦ παντὸς κόσμου σωτηρίαν, ἀνατίθεμεν τῷ πατρί. οὔτε τρεῖς ὑποστάσεις μεμερισμένας καθ' ἑαυτάς, ὥσπερ σωματοφυῶς ἐπ' ἀνθρώπων ἐστὶ λογίσασθαι, ἵνα μὴ πολυθείαν ὡς τὰ ἔθνη φρονήσωμεν, ἀλλ' ὥσπερ ἐκ πηγῆς ποταμὸς γεγενημένος οὐ διῃρέτη καίτοι δύο σχήματα καὶ δύο ὀνόματα τυγχάνοντα. οὔτε γὰρ ὁ πατὴρ υἱός ἐστιν οὔτε ὁ υἱὸς πατήρ ἐστιν. ὁ γὰρ πατὴρ υἱοῦ πατήρ ἐστι καὶ ὁ υἱὸς πατρὸς υἱός ἐστιν. ὡς γὰρ οὐκ ἔστιν ἡ πηγὴ ποταμὸς οὐδὲ ὁ ποταμὸς πηγή· ἀμφότερα δὲ ἓν καὶ ταυτόν ἐστιν ὕδωρ τὸ ἐκ τῆς πηγῆς εἰς τὸν ποταμὸν μετοχετευόμενον, οὕτως ἡ ἐκ τοῦ πατρὸς εἰς τὸν υἱὸν θεότης ἀρρεύστως καὶ ἀδιαιρέτως τυγχάνει. φησὶ γὰρ ὁ κύριος·
English
I have authority to set it down and authority to take it back again.” In which man, having been crucified and having died for us, he rose from the dead, was taken up into the heavens, having been created a beginning of ways for us, being on earth he showed us light from darkness, salvation from error, life from the dead, an entrance into paradise, from which Adam had been cast out, into which he again entered through the thief, as the Lord said: “Today you will be with me in paradise,” into which also Paul entered; and an ascent into the heavens, “where the forerunner entered for us,” the Lord’s man, in whom he is about to judge the living and the dead. We believe likewise in the Holy Spirit, which examines all things “and the depths of God,” anathematizing doctrines that think otherwise. For we neither hold a Father-son doctrine as the Sabellians do, saying one-in-being and not of-the-same-being, and in this abolishing the existence of the Son. Nor do we attribute the passible body which he wore for the salvation of the whole world to the Father. Nor do we hold three hypostases divided in themselves, as it is possible to conceive in a bodily manner in the case of humans, so that we may not think polytheism as the pagans do, but as a river generated from a source is not divided, although they happen to be two forms and two names. For neither is the Father the Son nor is the Son the Father. For the Father is father of a son and the Son is son of a father. For just as the source is not the river nor the river the source, but both are one and the same water channeled from the source into the river, so the divinity from the Father to the Son flows without flux and without division. For the Lord says:
khazarzar-marcellus-ancyranus-expositio-fidei:3 · narrativehigh
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"ἐκ τοῦ πατρὸς ἐξῆλθον καὶ ἥκω." παρὰ δὲ τῷ πατρί ἐστιν ἀεὶ ὁ ὢν εἰς τὸν κόλπον τοῦ πατρός. οὐδέποτε δὲ ἐκενώθη ὁ κόλπος τοῦ πατρὸς τῆς τοῦ υἱοῦ θεότητος. φησὶ γάρ· "ἐγὼ ἤμην παρ' αὐτῷ ἁρμόζουσα." οὐ φρονοῦμεν δὲ κτίσμα ἢ ποίημα ἢ ἐξ οὐκ ὄντων τὸν τοῦ παντὸς κτίστην θεόν, τὸν τοῦ θεοῦ υἱόν, τὸν ἐκ τοῦ ὄντος ὄντα, τὸν ἐκ τοῦ μόνου μόνον, ὡς συναπεγεννήθη ἐκ τοῦ πατρὸς ἀϊδίως ἡ ὁμοία δόξα καὶ δύναμις. "ὁ" γὰρ "ἑωρακὼς τὸν υἱὸν καὶ τὸν πατέρα ἑώρακε." τὰ πάντα δηλονότι διὰ τοῦ υἱοῦ ἐκτίσθησαν, ἀλλ' οὐκ ἔστιν αὐτὸς κτίσμα, ὥς φησιν ὁ Παῦλος περὶ τοῦ κυρίου· "ὅτι ἐν αὐτῷ ἐκτίσθη τὰ πάντα" καὶ "αὐτός ἐστι πρὸ πάντων." οὐ λέγει δὲ ὅτι πρὸ πάντων ἐκτίσθη"3, ἀλλ' ὅτι πρὸ πάντων ἐστί. τὸ γοῦν ἐκτίσθαι ἐπὶ πάντων κεῖται· τὸ δὲ ἔστι πρὸ πάντων μόνῳ τῷ υἱῷ ἁρμόζει. Γέννημα τοίνυν κατὰ φύσιν ἐκ τελείου τέλειόν ἐστι. "πρὸ πάντων βουνῶν" γεννηθέν, τουτέστι πρὸ πάσης λογικῆς καὶ νοερᾶς οὐσίας. ὡς καὶ ἐν ἑτέρῳ τόπῳ φησὶν αὐτὸν ὁ Παῦλος "πρωτότοκον πάσης κτίσεως." ἀλλὰ πρωτότοκον δηλῶν μὴ εἶναι αὐτὸν κτίσμα ἀλλὰ γέννημα τοῦ πατρός. ξένον γὰρ ἐπὶ τῆς θεότητος αὐτοῦ τὸ λέγεσθαι κτίσμα. τὰ γὰρ πάντα ἐκτίσθησαν ὑπὸ τοῦ πατρὸς διὰ τοῦ υἱοῦ, ὁ δὲ υἱὸς μόνος ἐκ τοῦ πατρὸς ἀϊδίως ἐγεννήθη. διὸ "πρωτότοκός ἐστι πάσης κτίσεως" ὁ θεὸς λόγος· ἄτρεπτος ἐξ ἀτρέπτου. ἔστι τοίνυν τὸ ὃ δι' ἡμᾶς ἐφόρεσε σῶμα κτίσμα. περὶ οὗ λέγει ὁ Ἰερεμίας κατὰ τὴν τῶν ἑβδομήκοντα ἑρμηνευτῶν ἔκδοσιν·
English
I came forth from the Father and I am here.” But the Son is always in the bosom of the Father, being with the Father. Never was the bosom of the Father emptied of the Son’s divinity. For it says: “I was with him, fitting together.” We do not think that the Son of God, the creator God of the universe, is a creature or a product or from non-existent things, but that he is from the one who is, the only from the only, as the like glory and power were co-generated from the Father eternally. For “he who has seen the Son has also seen the Father.” All things were evidently created through the Son, but he himself is not a creature, as Paul says concerning the Lord: “that in him all things were created” and “he is before all things.” He does not say that he was created before all things, but that he is before all things. For “to be created” is said of all things; but “is before all things” belongs to the Son alone. A offspring according to nature is perfect from perfect. “Born before all hills,” that is, before every rational and intellectual substance. As also in another place Paul calls him “firstborn of all creation.” But “firstborn” indicates that he is not a creature but an offspring of the Father. For it is foreign to his divinity to be called a creature. For all things were created by the Father through the Son, but the Son alone was eternally generated from the Father. Therefore “the Word of God is firstborn of all creation,” unchangeable from the unchangeable. So the body which he wore for our sake is a creature. Concerning this Jeremiah says, according to the edition of the Seventy interpreters:
khazarzar-marcellus-ancyranus-expositio-fidei:4 · narrativehigh
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"κύριος ἡμῖν ἔκτισεν εἰς καταφύτευμα σωτηρίαν καινήν, ἐν ᾗ σωτηρίᾳ περιελεύσονται ἄνθρωποι." κατὰ δὲ τὸν Ἀκύλαν περὶ τοῦ αὐτοῦ ῥητοῦ κεῖται· "ἔκτισε κύριος καινὸν ἐν τῇ θηλείᾳ." ἡ δὲ κτισθεῖσα ἡμῖν εἰς καταφύτευμα σωτηρία καινὴ καὶ οὐ παλαιά, ἡμῖν τε καὶ οὐ πρὸ ἡμῶν, Ἰησοῦς ἐστιν ὁ κατὰ τὸν σωτῆρα γενόμενος ἄνθρωπος. ὃς ἑρμηνεύεται πῇ μὲν σωτηρία, πῇ δὲ σωτήρ. ἔστι δὲ ἐκ τοῦ σωτῆρος ἡ σωτηρία ὃν τρόπον ἐκ τοῦ φωτὸς ὁ φωτισμός. ἡ οὖν ἐκ τοῦ σωτῆρος σωτηρία κτισθεῖσα καινὴ καθὼς λέγει Ἰερεμίας "ἔκτισεν ἡμῖν σωτηρίαν καινὴν" καὶ ὡς Ἀκύλας φησὶν "ἔκτισε κύριος καινὸν ἐν τῇ θηλείᾳ," τουτέστιν ἐν τῇ Μαρίᾳ. οὐδὲν γὰρ ἐκτίσθη καινὸν ἐν τῇ θηλείᾳ εἰ μὴ τὸ ἐκ Μαρίας, τῆς παρθένου, τεχθὲν ἄνευ συνουσίας κυριακὸν σῶμα. ὡς καὶ ἐν παροιμίαις ἐκ προσώπου τοῦ Ἰησοῦ λέγει· "κύριος ἔκτισέ με ἀρχὴν ὁδῶν αὐτοῦ εἰς ἔργα αὐτοῦ." οὐ λέγει δὲ πρὸ ἔργων ἔκτισέ με, ἵνα μή τις εἰς τὴν θεότητα τοῦ λόγου ἐκλάβοι τὸ ῥητόν. Ἑκάτερα τοίνυν τὰ περὶ τὸ κτίσμα ῥητὰ σωματικῶς εἰς τὸν Ἰησοῦν γέγραπται. ἀρχὴ γὰρ ὁδῶν ἐκτίσθη ὁ κυριακὸς ἄνθρωπος, ὧν εἰς σωτηρίαν ἡμῖν ἐφανέρωσε. διὰ τούτου γὰρ πρὸς τὸν πατέρα ἔχομεν προσαγωγήν. αὐτὸς γάρ ἐστιν ἡ ὁδός, καθὼς λέγει· "ἐγώ εἰμι ἡ ὁδὸς" ἡ πρὸς τὸν πατέρα ἀνάγουσα ὑμᾶς. ὁδὸς δὲ σωματικόν τί ἐστι θέαμα, ἥτις ἐστὶν ὁ κυριακὸς ἄνθρωπος. τὰ πάντα γοῦν ἔκτισεν ὁ τοῦ θεοῦ λόγος οὐκ ὢν κτίσμα ἀλλὰ γέννημα. οὐδὲν γὰρ τῶν κτισμάτων ἔκτισέ τι ἴσον ἢ ὅμοιον ἑαυτῷ. πατρὶ δὲ ἔοικε τὸ γεννᾶν, τεχνίτῃ δὲ τὸ κτίζειν.
English
The Lord planted for us a new salvation as a plantation, in which salvation men will go about.” And according to Aquila, concerning the same passage it stands: “The Lord planted a new thing in the female.” The salvation planted for us as a plantation, new and not old, for us and not before us, is Jesus, who according to the Savior became man. He is interpreted sometimes as “salvation,” sometimes as “savior.” And salvation is from the savior, in the same way that illumination is from light. Therefore, the salvation from the savior, planted as new, as Jeremiah says, “He planted for us a new salvation,” and as Aquila says, “The Lord planted a new thing in the female,” that is, in Mary. For nothing new was planted in the female except the Lord’s body born from Mary the virgin without intercourse. As also in Proverbs, from the person of Jesus it says: “The Lord planted me as the beginning of his ways for his works.” But it does not say “he planted me before works,” lest anyone take the passage as referring to the divinity of the Word. Therefore, both passages concerning the creation are written corporeally about Jesus. For the Lord’s man was planted as the beginning of ways, which he revealed to us for salvation. For through him we have access to the Father. For he himself is the way, as he says: “I am the way” that leads you to the Father. And a way is something corporeal to behold, which is the Lord’s man. Therefore, the Word of God created all things, not being a creation but a offspring. For none of the creations created anything equal or similar to itself. For begetting is like the father, while creating is like the craftsman.
khazarzar-marcellus-ancyranus-expositio-fidei:5 · narrativehigh
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ποίημα γοῦν ἐστι καὶ κτίσμα τὸ ὃ δι' ἡμᾶς ἐφόρεσε σῶμα ὁ κύριος, "ὃ ἐγεννήθη ἡμῖν", ὥς φησιν ὁ Παῦλος, "ἀπὸ θεοῦ σοφία καὶ ἁγιασμὸς καὶ δικαιοσύνη καὶ ἀπολύτρωσις." καίπερ πρὸ ἡμῶν καὶ πάσης κτίσεως σοφία τοῦ πατρὸς ἦν ὁ λόγος καὶ ἔστι. τὸ δὲ ἅγιον πνεῦμα ἐκπόρευμα ὂν τοῦ πατρὸς ἀεί ἐστιν ἐν ταῖς χερσὶ τοῦ πέμποντος πατρὸς καὶ τοῦ φέροντος υἱοῦ, δι' οὗ ἐπλήρωσε τὰ πάντα. ὁ πατὴρ συνέχων ἐξ ἑαυτοῦ τὸ εἶναι ἐγέννησε τὸν υἱόν, ὡς ἔφαμεν, καὶ οὐκ ἔκτισεν ὡς ποταμὸν ἀπὸ πηγῆς καὶ ὡς βλαστὸν ἀπὸ ῥίζης καὶ ὡς ἀπαύγασμα ἀπὸ φωτός, ἃ οἶδεν ἡ φύσις ἀδιαίρετα, δι' οὗ τῷ πατρὶ δόξα, κράτος, μεγαλοσύνη πρὸ πάντων τῶν αἰώνων καὶ εἰς τοὺς σύμπαντας αἰῶνας τῶν αἰώνων. ἀμήν.
English
The body which the Lord wore for our sake is indeed a creation and a thing made, "which was born for us," as Paul says, "from God—wisdom and sanctification and righteousness and redemption." Yet before us and before all creation, the Word was and is the wisdom of the Father. And the Holy Spirit, being an emanation from the Father, is always in the hands of the Father who sends and of the Son who bears, through whom He filled all things. The Father, holding the being from Himself, begot the Son, as we have said, and did not create Him, as a river from a spring and as a shoot from a root and as a radiance from light—things which nature knows to be indivisible—through whom to the Father there is glory, power, and majesty before all ages and into all the ages of ages. Amen.
Citation. Tergwame, “Expositio fidei”, khazarzar-marcellus-ancyranus-expositio-fidei:1, machine-draft, 2026. https://naxiai.com/christian/works/khazarzar-marcellus-ancyranus-expositio-fidei#s1
Colophon. Source: khazarzar · licence: Migne PG text (public domain); khazarzar host and the digitising project state no licence for this layer · model: deepseek/deepseek-v4-flash:floor · provider: Relace · cost: $0.0033 · generated 2026-11-15.