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What models cost

Published API prices per million tokens, as the daily briefings reported them. Each line follows one model family across generations, so a new model at a lower price shows up as a step down. Every number links to its source; nothing here is estimated.

7
price changes in the last 30 days
3 cuts · 0 rises in output price
−58%
GPT-6 Luna output price
Biggest cut, vs GPT-5.6 Luna
14
model families tracked
32 published prices since May 31, 2026

Figures as of Oct 5, 2026, 10:29 UTC

Output price over time

USD per million output tokens, on a log scale shared by every panel, so equal steps are equal percentage changes. A gap means a promotional price ended and no later price was recorded. Exact figures are in the table below.

OpenAI
$0.10 $1 $10 $100 MayJunJulAugSep GPT-6 Astra: $10 in / $50 out from Sep 3, 2026 GPT-5.6 Sol: $5 in / $30 out from Jul 9, 2026 GPT-5.6 Sol: $4 in / $20 out from Aug 21, 2026 (promo) GPT-6 Sol: $2 in / $10 out from Sep 22, 2026 GPT-6.1 Sol: $2 in / $10 out from Sep 29, 2026 GPT-5.6 Luna: $1 in / $6 out from Jul 9, 2026 GPT-5.6 Luna: $0.20 in / $1.20 out from Jul 30, 2026 GPT-6 Luna: $0.10 in / $0.50 out from Sep 22, 2026
  • OpenAI Astra $50 now
  • OpenAI Sol $10 now
  • OpenAI Luna $0.50 now
Anthropic
$0.10 $1 $10 $100 MayJunJulAugSep Claude Fable 5: $10 in / $50 out from Jun 9, 2026 Claude Fable 5.1: $10 in / $50 out from Sep 1, 2026 Claude Opus 5: $5 in / $25 out from Jul 24, 2026 Claude Opus 5.5: $4 in / $20 out from Sep 22, 2026 Claude Sonnet 5: $2 in / $10 out from Jun 30, 2026 (promo) Claude Sonnet 5.5: $2 in / $10 out from Sep 28, 2026
  • Claude Fable $50 now
  • Claude Opus $20 now
  • Claude Sonnet $10 now
DeepSeek
$0.10 $1 $10 $100 MayJunJulAugSep DeepSeek V4 Pro: $0.435 in / $0.87 out from May 31, 2026 DeepSeek V4 Pro: $0.66 in / $1.98 out from Aug 16, 2026 DeepSeek V4-Flash-0731: $0.14 in / $0.27 out from Jul 31, 2026
  • DeepSeek V4 Pro $1.98 now
  • DeepSeek V4 Flash $0.27 now
xAI
$0.10 $1 $10 $100 MayJunJulAugSep Grok 4.5: $2 in / $6 out from Jul 8, 2026 Grok 4.6: $2 in / $6 out from Aug 12, 2026 Grok 4.7: $2 in / $6 out from Sep 21, 2026
  • Grok $6 now
Google
$0.10 $1 $10 $100 MayJunJulAugSep Gemini 3.7 Flash: $0.75 in / $3.75 out from Aug 13, 2026 (promo) Gemini 3.8 Flash: $0.75 in / $3.50 out from Sep 2, 2026 (promo)
  • Gemini Flash $3.50 now
Meta
$0.10 $1 $10 $100 MayJunJulAugSep Muse Spark 1.1: $1.25 in / $4.25 out from Jul 9, 2026 Muse Spark 1.2: $1.25 in / $4.25 out from Aug 5, 2026
  • Muse Spark $4.25 now
Moonshot AI
$0.10 $1 $10 $100 MayJunJulAugSep Kimi K3: $3 in / $15 out from Jul 16, 2026
  • Kimi $15 now
StepFun
$0.10 $1 $10 $100 MayJunJulAugSep Step 5 Preview: $1 in / $2.70 out from Sep 20, 2026 (preview)
  • Step $2.70 now
Z.ai
$0.10 $1 $10 $100 MayJunJulAugSep GLM-5.3: $1.40 in / $4.40 out from Aug 18, 2026
  • GLM $4.40 now

Current prices

USD per million tokens, current as of the build time above. The date links to the source.

Current published API price per model family, USD per million tokens
Model Input Output Cached input Since
GPT-6 Astra · OpenAI $10 $50 — Sep 3, 2026
GPT-6.1 Sol · OpenAI $2 $10 $0.10 Sep 29, 2026
GPT-6 Luna · OpenAI $0.10 $0.50 $0.01 Sep 22, 2026
Claude Fable 5.1 · Anthropic $10 $50 $0.25 Sep 1, 2026
Claude Opus 5.5 · Anthropic $4 $20 $0.20 Sep 22, 2026
Claude Sonnet 5.5 · Anthropic $2 $10 $0.20 Sep 28, 2026
DeepSeek V4 Pro · DeepSeek
peak hours, 01:00–04:00 and 06:00–10:00 UTC: $1.32 / $3.96
$0.66 $1.98 $0.022 Aug 16, 2026
DeepSeek V4-Flash-0731 · DeepSeek $0.14 $0.27 — Jul 31, 2026
Grok 4.7 · xAI $2 $6 — Sep 21, 2026
Gemini 3.8 Flash · Google promo to Dec 31, 2026
From Jan 1, 2027: $1.50 / $7.50
$0.75 $3.50 — Sep 2, 2026
Muse Spark 1.2 · Meta
contributor tier: usage feedback goes back to Meta: $0.10 / $0.20
$1.25 $4.25 — Aug 5, 2026
Kimi K3 · Moonshot AI $3 $15 $0.30 Jul 16, 2026
Step 5 Preview · StepFun preview $1 $2.70 — Sep 20, 2026
GLM-5.3 · Z.ai $1.40 $4.40 — Aug 18, 2026

Every change

› September 2026 · 10 changes

  1. Sep 29, 2026 GPT-6.1 Sol $2 / $10

    Briefing Source

  2. Sep 28, 2026 Claude Sonnet 5.5 $2 / $10

    Briefing Source

  3. Sep 22, 2026 Claude Opus 5.5 $4 / $20 output −20% vs Claude Opus 5

    Down from Opus 5; cache reads fall from $0.50 to $0.20.

    Briefing Source

  4. Sep 22, 2026 GPT-6 Luna $0.10 / $0.50 output −58% vs GPT-5.6 Luna

    Briefing Source 1Source 2

  5. Sep 22, 2026 GPT-6 Sol $2 / $10 output −50% vs GPT-5.6 Sol

    Briefing Source 1Source 2

  6. Sep 21, 2026 Grok 4.7 $2 / $6

    Briefing Source

  7. Sep 20, 2026 Step 5 Preview $1 / $2.70 first price in Step preview

    Price as reported by Artificial Analysis; StepFun calls the model a preview.

    Briefing Source

  8. Sep 3, 2026 GPT-6 Astra $10 / $50 first price in OpenAI Astra

    Briefing Source

  9. Sep 2, 2026 Gemini 3.8 Flash $0.75 / $3.50 output −7% vs Gemini 3.7 Flash promo to Dec 31, 2026

    Introductory through December 31, 2026.

    Briefing Source

  10. Sep 1, 2026 Claude Fable 5.1 $10 / $50

    Same per-token rate as Fable 5; cache reads at $0.25 are a 75% cut.

    Briefing Source

› August 2026 · 6 changes

  1. Aug 21, 2026 GPT-5.6 Sol $4 / $20 output −33% vs GPT-5.6 Sol promo to Nov 21, 2026

    OpenAI said the promotional price holds at least through November 21, 2026; that is the earliest it can end, not a confirmed end date.

    Briefing Source

  2. Aug 18, 2026 GLM-5.3 $1.40 / $4.40 first price in GLM

    Same rate as GLM-5.2.

    Briefing Source 1Source 2

  3. Aug 16, 2026 DeepSeek V4 Pro $0.66 / $1.98 output +128% vs DeepSeek V4 Pro

    From 16:00 UTC on August 16, 2026. Off-peak is shown as the headline rate; peak hours (01:00–04:00 and 06:00–10:00 UTC) bill at double, recorded separately.

    Briefing Source

  4. Aug 13, 2026 Gemini 3.7 Flash $0.75 / $3.75 first price in Gemini Flash promo to Dec 31, 2026

    Introductory through December 31, 2026, doubling to $1.50/$7.50 on January 1, 2027.

    Briefing Source

  5. Aug 12, 2026 Grok 4.6 $2 / $6

    Briefing Source

  6. Aug 5, 2026 Muse Spark 1.2 $1.25 / $4.25

    Briefing Source

› July 2026 · 8 changes

  1. Jul 31, 2026 DeepSeek V4-Flash-0731 $0.14 / $0.27 first price in DeepSeek V4 Flash

    Briefing Source 1Source 2

  2. Jul 30, 2026 GPT-5.6 Luna $0.20 / $1.20 output −80% vs GPT-5.6 Luna

    Briefing Source

  3. Jul 24, 2026 Claude Opus 5 $5 / $25 first price in Claude Opus

    Same rate as Opus 4.8.

    Briefing Source

  4. Jul 16, 2026 Kimi K3 $3 / $15 first price in Kimi

    Briefing Source 1Source 2

  5. Jul 9, 2026 Muse Spark 1.1 $1.25 / $4.25 first price in Muse Spark

    Meta’s first paid model API, in US developer public preview.

    Briefing Source

  6. Jul 9, 2026 GPT-5.6 Luna $1 / $6 first price in OpenAI Luna

    Published with the limited preview on June 26, 2026; unchanged at general availability on July 9.

    Briefing Source

  7. Jul 9, 2026 GPT-5.6 Sol $5 / $30 first price in OpenAI Sol

    Published with the limited preview on June 26, 2026; unchanged at general availability on July 9.

    Briefing Source

  8. Jul 8, 2026 Grok 4.5 $2 / $6 first price in Grok

    Briefing Source

› June 2026 · 2 changes

  1. Jun 30, 2026 Claude Sonnet 5 $2 / $10 first price in Claude Sonnet promo to Aug 31, 2026

    Introductory pricing through August 31, 2026, announced to rise to $3/$15 afterwards.

    Briefing Source

  2. Jun 9, 2026 Claude Fable 5 $10 / $50 first price in Claude Fable

    Briefing Source

› May 2026 · 1 change

  1. May 31, 2026 DeepSeek V4 Pro $0.435 / $0.87 first price in DeepSeek V4 Pro

    The promotional discount became the permanent rate on May 31, 2026 and the reference list price was retired. Effective date from the 2026-06-01 briefing; the rates as restated in the 2026-08-14 briefing.

    Briefing Source