Quick Answer
Last verified:
High confidence

Codex costs Free to $350 per month as of July 2026, with 3 plans available including a free tier. Plans: Free (free), and Growth at $350/month. Enterprise pricing is available on request. Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: Yes

Codex offers 3 pricing tiers: Free, Growth, Enterprise. A free plan is available. Paid plans include Growth at $350/month. The Growth plan is startups/teams.

Last verified: | Sources: 2 pricing pages and reviews
+25%–+70% above list price
Know Before You Buy — Try Codex Free

Codex's sourced hidden costs add +25%–+70% on top of a $4,200/yr base license (about $5,250–$7,140/yr) as of July 2026. Key hidden costs: per-token pricing kicks in after subscription limits, context bloat multiplies token consumption, pro plan required for codex access. Verified from 2 sources by CostBench.

Hidden Costs Breakdown

1

Per-Token Pricing Kicks In After Subscription Limits

high overage

Users on subscription plans (Free and Growth) face hard usage limits. Once limits are exhausted, continued use requires API access at per-token rates, which can become expensive quickly for heavy coding sessions.

hn

the per token pricing kicked in way sooner. This is happening across the board, but we felt it in Codex more acutely. We're a startup filled with people who work around the clock and are obsessed with building — naturally our daily bill alone was striking.

hn

AI is expensive and it has been heavily subsidized. I you think $20/mo for Codex/Claude flat vs a more usage based model you're in for a shock.

2

Context Bloat Multiplies Token Consumption

medium overage

Users report that coding sessions generate far more token usage than expected due to context bloat: generated artifacts, build output, large instruction files, repeated tool outputs, broad repo exploration, and stale session state. This drives up costs beyond the nominal per-session expectations.

hn

I built PrismoDev after noticing my Claude Code and Codex sessions were getting expensive in ways that were hard to explain. After digging through local session logs, the recurring issue was not just model pricing. A lot of the waste came from context bloat: generated artifacts, logs, build output, oversized CLAUDE.md / AGENTS.md files, repeated tool output, broad repo exploration, stale session state, and command loops.

3

Pro Plan Required for Codex Access

medium addon

Codex agent access is restricted to specific plan tiers. Users on Team or lower plans have reported being unable to access Codex despite expecting it to be included, creating friction and potential need to upgrade.

reddit

We upgraded from plus to the team plan in hopes of trying out the OpenAI Codex but I don't see it anywhere... it says that it is only for the Pro plan

4

Switching Costs and Harness Lock-In

medium migration

Users who build workflows, skills, and memory layers tightly coupled to Codex's conventions face significant migration friction when switching providers. Business logic tied to one harness's keywords breaks or degrades silently when switching tools.

hn

You're billed at their mercy. Your plan can be pulled, gated behind pay-as-you-go, repriced 'from $200 to $1,000 overnight' or the most powerful model taken away (the Fable story). High switching friction means you can't leave.

Year-1 Cost

Annual license ($350/mo × 12) $4,200/yr
Per-Token Pricing Kicks In After Subscription Limits (5-15% of license costs) +$210–$630
Context Bloat Multiplies Token Consumption (10-30% of license costs) +$420–$1,260
Pro Plan Required for Codex Access (5-10% of license costs) +$210–$420
Switching Costs and Harness Lock-In (5-15% of license costs) +$210–$630
Estimated Year-1 Total $5,250–$7,140
That's +25%–+70% on top of the base license, summed from the sourced hidden costs above. The median Codex contract is $276/yr across 29 Vendr purchases.

Frequently Asked Questions

01 What hidden costs should I budget for with Codex?

Beyond the license fee, budget for: Per-Token Pricing Kicks In After Subscription Limits (5-15% of license costs); Context Bloat Multiplies Token Consumption (10-30% of license costs); Pro Plan Required for Codex Access (5-10% of license costs); Switching Costs and Harness Lock-In (5-15% of license costs). For a typical deployment that works out to roughly +25%–+70% on top of the base license ($4,200/yr → $5,250–$7,140/yr).

02 Does Codex charge for implementation?

Implementation costs for Codex vary by deployment size and customization. Contact the vendor or check our sourced hidden-cost breakdown above for verified figures.

03 How much does Codex support cost?

Premium support pricing for Codex depends on your tier and contract terms. See the sourced cost breakdown above for any verified figures we have.

04 Are there overage or storage costs with Codex?

Users on subscription plans (Free and Growth) face hard usage limits. Once limits are exhausted, continued use requires API access at per-token rates, which can become expensive quickly for heavy coding sessions. Estimated impact: 5-15% of license costs.

05 What add-ons cost extra with Codex?

Add-on pricing for Codex varies by feature. The sourced cost breakdown above lists any verified add-on costs we have.

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Check current Codex pricing

Prices and terms change; verify against the live pricing page.

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