ChatGPT vs Claude API pricing: which LLM API in 2026?
Claude API provides a highly competitive structure with Claude Haiku 4.5 starting at $1 / MTok input and $5 / MTok output, matching OpenAI's Luna model at $1.00 input and $6.00 output per million tokens. For flagship workloads, Claude Opus 4.8 costs $5 / MTok input and $25 / MTok output, while GPT Sol runs at $5.00 input and $30.00 output per million tokens. The deciding factors are prompt caching which reduces Claude read costs to 0.1x of base rates, and your specific requirements for audio or tool execution.
Data checked:
TL;DR verdict
Pick ChatGPT APIs when you need native audio translation starting at $0.034 per minute or specialized Sora video generations. Pick Claude APIs when building high-frequency tools or coding assistants where prompt caching hits reduce input costs by up to 90%.
| Metric / Model | ChatGPT API | Claude API |
|---|---|---|
| Lightweight Input | $1.00 / 1m tokens (GPT Luna) | $1 / MTok (Claude Haiku 4.5) |
| Lightweight Output | $6.00 / 1m tokens (GPT Luna) | $5 / MTok (Claude Haiku 4.5) |
| Mid-tier Input | $2.50 / 1m tokens (GPT Terra) | $2 / MTok current, $3 / MTok from Sept 1, 2026 (Claude Sonnet 5) |
| Mid-tier Output | $15.00 / 1m tokens (GPT Terra) | $10 / MTok current, $15 / MTok from Sept 1, 2026 (Claude Sonnet 5) |
| Flagship Input | $5.00 / 1m tokens (GPT Sol) | $5 / MTok (Claude Opus 4.8) |
| Flagship Output | $30.00 / 1m tokens (GPT Sol) | $25 / MTok (Claude Opus 4.8) |
| Web Search Price | $10.00 / 1k calls + tokens | $10 per 1,000 searches |
| Code Execution | From $0.03 to $1.92 per 20-min session | 1,550 free hours per month, then $0.05/hour/container |
Sources: OpenAI API Pricing · Anthropic Claude API Pricing · data checked: Jul 18, 2026
Which we'd pick, scenario by scenario
High-volume customer support chat
Claude Haiku 4.5. At $1 / MTok input and $5 / MTok output, it is highly economical, and the 0.1x prompt caching read hit discount keeps costs low during long multi-turn sessions.
Data-intensive document processing pipelines
ChatGPT GPT Terra. Priced at $2.50 input and $15.00 output per million tokens, it offers a solid middle-ground speed and cost, bypassing Claude Sonnet 5 pricing changes which rise to $3 / MTok input in September 2026.
Complex coding or reasoning agents
Claude Opus 4.8. For deep technical reasoning, the $5 / MTok input and $25 / MTok output pricing is cheaper on output than GPT Sol at $30.00 per million tokens, especially when utilizing recurring context blocks.
Our take
We frequently guide clients at Dobify when designing enterprise solutions. The pricing choice between these developer platforms is no longer a simple per-token calculation, as smart caching and specialized tools redefine actual costs. If you run a high-traffic setup utilizing our AI chatbots development services, Claude's prompt caching read multiplier of 0.1x base input price completely alters the economics of multi-turn conversations. On the other hand, OpenAI remains the clear leader for multimodal pipelines. If your workflows require voice features, ChatGPT's Realtime audio pricing of $32.00 input and $64.00 output per million tokens has no direct equivalent in Anthropic's lineup. When implementing custom backend integrations or workflow automations, we advise starting with Sonnet 5 or GPT Terra, but keep in mind that Sonnet 5 input rises to $3 / MTok and output to $15 / MTok after August 2026. For heavy production volumes, we recommend establishing a hybrid router to prevent single-vendor lock-in.