Is Claude or ChatGPT better for coding?
A Claude model holds the top score of every model Artificial Analysis tested on all three of its coding benchmarks, read 12 October 2026: Opus on FrontierCode and SciCode, Sonnet on Terminal-Bench 4.0. Against GPT Sol alone, Opus wins all three at max effort, the setting both labs' rows use.
Each of the tests checks a different job. FrontierCode comes from Cognition, and it asks if a real maintainer would merge the change an agent made to an open source repo. Terminal-Bench 4.0 gives an agent 66 hard jobs to do in a shell. SciCode asks it to write Python functions for 80 lab problems. Claude's widest lead is on SciCode, at 12.7 points. Its narrowest is FrontierCode, where 3.1 points is about three tasks out of the 100 that Artificial Analysis runs.
The cheaper Claude doesn't win everything. Claude Sonnet costs the same per token as GPT Sol, and its 63.6% on Terminal-Bench 4.0 is that board's top score. But it falls to 45.8% on FrontierCode, behind Sol's 49.1%.
You won't find these models on SWE-bench. The official SWE-bench Verified board has no entry after 26 February 2026, and Scale's SWE-bench Pro board stops at early 2026 models that neither app lists today. OpenAI stopped reporting Verified that month. Its post on the change says gains on it "increasingly reflect how much the model was exposed to the benchmark at training time." Those boards are stale. So a table that crowns a winner on SWE-bench is ranking retired models.
Which coding agent comes with a $20 plan, Codex or Claude Code?
Both $20 plans include a coding agent: ChatGPT Plus comes with Codex and Claude Pro comes with Claude Code, at $20 a month each as of October 2026. Claude Pro also sells for $17 a month billed yearly.
| As of 12 October 2026 | ChatGPT Plus | Claude Pro |
|---|---|---|
| Price | $20 a month | $20 a month, or $17 a month billed yearly ($200) |
| Coding agent | Codex on the web, CLI, IDE extension and iOS | Claude Code in the terminal, VS Code, Cursor and JetBrains IDEs |
| Model for hard coding | GPT-6.1 Sol, OpenAI's pick for complex coding | Claude Opus 5.5, the Claude Code default |
| Published five hour estimate | 15 to 160 local messages on GPT-6.1 Sol, 5 to 45 on GPT-6 Astra | None. Pro is "at least 5x more usage per 5-hour session than Free" |
| Weekly cap | "Weekly limits may also apply" | A five hour session limit and a weekly limit |
| Shares its limit with | ChatGPT Work | Claude chat on web, desktop and mobile |
| Past the limit | Buy ChatGPT credits | Turn on usage credits |
| Context window in chat | 54K tokens fast, 256K reasoning | Up to 1M, by model |
| On the free plan | Limited Codex with GPT-6 Luna | No Claude Code |
OpenAI is the only one of the two that puts a number on it. Its Codex pricing page estimates 15 to 160 local messages every five hours on Sol, and pitches Plus as the plan to "Power a few focused coding sessions each week." Cloud tasks may use more of that than local ones.
Anthropic doesn't give a count at all. Its Claude Code help page says Pro has a five hour session limit and a weekly limit, and: "These limits are shared across Claude and Claude Code, meaning all activity in both tools counts against the same limits." So a long chat about a bug eats into your agent time. One trap from the same page: if ANTHROPIC_API_KEY is set in your shell, Claude Code bills the API instead of your plan.
OpenAI's newest models live in the agent, not the chat box. Its models page says the newest Sol and Luna models run in Codex and Work, but not in the Chat window. For what happens when Claude cuts you off, see Claude usage limit reached.
Is ChatGPT or Claude better for Python?
Claude is better for Python on the one Python benchmark in the set. SciCode's tasks ask for Python functions, like an Ewald summation for a crystal lattice, and Claude Opus passes 66.9% of them against GPT Sol's 54.2%. That gap is wide.
It isn't only Opus that does well here. Every Claude model on the board beats Sol here, down to Claude Haiku at 55.0%. Even OpenAI's small Luna edges its big sibling, 54.6% to 54.2%. SciCode is science code, so read it as a guide for numeric work. It says less about a Django app.
How much code can ChatGPT and Claude read at once?
Claude can read more of your code in a chat. Anthropic's pricing page lists a context window of up to 1M tokens on every plan, varying by model. Its Claude Code model docs say recent Opus models run with the 1M window by default.
ChatGPT Plus gives its fast chat model 54K tokens and its reasoning model 256K, per OpenAI's pricing page. That's about a quarter of what Claude can hold. Through the API, Artificial Analysis lists GPT Sol at 1M tokens too, but OpenAI publishes no context figure for Codex on Plus. Paste a whole module into chat and Claude is the one that keeps all of it. The context window comparison covers the other apps.
Which is cheaper for coding, ChatGPT or Claude?
ChatGPT is the cheaper of the two per token. OpenAI's API pricing charges $2 per million input tokens and $10 per million output for GPT Sol. Anthropic charges $4 and $20 for Claude Opus. So Opus costs twice as much, at list prices in October 2026.
| Max effort, read 12 October 2026 | FrontierCode 1.1 | Terminal-Bench 4.0 | SciCode | API price per million tokens, in / out, short prompts |
|---|---|---|---|---|
| Claude Opus 5.5 | 52.2% | 59.6% | 66.9% | $4 / $20 |
| Claude Sonnet 5.5 | 45.8% | 63.6% | 61.0% | $2 / $10 |
| Claude Haiku 5.5 | 41.8% | 32.8% | 55.0% | $0.10 / $0.50 under 100K tokens |
| GPT-6 Astra | 47.0% | 59.1% | 56.5% | $10 / $50 |
| GPT-6.1 Sol | 49.1% | 56.1% | 54.2% | $2 / $10 |
| GPT-6 Luna | 41.9% | 12.6% | 54.6% | $0.10 / $0.50 |
The real gap is even wider than the list price. Artificial Analysis' model leaderboard puts Opus at max effort at $5.98 per task, against $0.72 for Sol. That's about 8 times as much, which means Opus also burns more tokens on each task.
On free plans ChatGPT wins by default. ChatGPT Free and Go get limited Codex with GPT-6 Luna, and Claude Free doesn't include Claude Code. Luna is a weak agent, though. It passed 12.6% of the tasks on Terminal-Bench 4.0, and Opus passed 59.6% of them.
Is ChatGPT or Claude faster for coding?
ChatGPT gets to a finished answer faster at max effort. Artificial Analysis timed GPT Sol at a median 347 seconds from prompt to full reply, against 754 for Claude Opus, on its model leaderboard read 12 October 2026. Most of that wait is thinking before the first word.
Opus types faster once it starts, at 96 tokens a second to Sol's 66. Those times are the max effort ceiling. Claude Code runs Opus at medium effort by default, per its model docs, so a default session isn't the setting timed here.
Should you use ChatGPT or Claude for coding?
Use Claude when you want the higher pass rate on hard code, and ChatGPT when you want cheaper, quicker runs.
| Pick Claude if | Pick ChatGPT if |
|---|---|
| You want the top scores on all three coding tests (Opus) | You pay per token and want half the price (Sol at $2 / $10) |
| You write Python for science or data (SciCode 66.9% against 54.2%) | You want a published estimate of how many agent runs you get |
| You paste whole files into chat (up to 1M tokens) | You code on a free plan (limited Codex with Luna) |
| You do terminal work on a budget (Sonnet, 63.6% on Terminal-Bench 4.0) | You want the agent on iOS and the web as well as the CLI |
| You want faster streaming once it starts (Opus, 96 tokens a second) | You want the full answer sooner (Sol, about 6 minutes against 12 at max effort) |
Neither one wins every task, so the cheap move is to test both on your own code. For the broader match on writing and research, read Claude vs ChatGPT. If you want other coding tools in the mix, ChatGPT alternatives for coding covers them.
Whizi fits one narrow case: you want Claude Opus and ChatGPT Sol to answer the same coding question before you pay for two plans. Side by side chats come with Whizi Pro at $29.99 a month. Each column bills at its own model's credit rate, so one compare spends both, and credits per message vary by model and can change. Whizi is a chat app, and for edits across a repo you'll still want Codex or Claude Code. The coding guide shows which coding rows each plan reaches.
- Pick the agent first: Codex comes with ChatGPT Plus, Claude Code with Claude Pro, both $20 a month
- Use Claude Opus for code that must pass review, and GPT Sol when cost per run matters more
- Check your Codex usage dashboard for the live five hour and weekly limits
- Unset ANTHROPIC_API_KEY before you run Claude Code on a Pro plan, or it bills the API
- Ignore SWE-bench tables that rank models neither app sells any more
Frequently asked questions
Is Claude Code better than Codex?
No public test settles it as of October 2026. Artificial Analysis scores coding agents in their own harnesses, but its harness comparison is marked coming soon and its agent scores are not public. What is public is the model gap: Claude Opus leads GPT Sol by 3 to 13 points on the three coding tests above. To test both on your own code, the free AI model comparison tool sends one prompt to several models.
Do Claude Code and Claude chat share the same limit?
Yes. Anthropic says Pro and Max limits are shared across Claude and Claude Code, so all activity in both counts against the same five hour and weekly limits. On ChatGPT, Codex shares its limit with ChatGPT Work, and OpenAI says weekly limits may also apply. Claude weekly limit explains the fixed reset day.
Can you use Codex or Claude Code for free?
Codex, yes, and Claude Code, no. ChatGPT Free and Go include limited Codex with GPT-6 Luna in the desktop app, subject to rollout. Claude Free does not include Claude Code, which starts on Claude Pro at $20 a month, or $17 a month billed yearly. Is Claude Pro worth it covers what it gives and where its limits bite.
Do you need both ChatGPT Plus and Claude Pro for coding?
Not necessarily. Neither model wins every task, so test both on your own code first. Codex comes with ChatGPT Plus and Claude Code with Claude Pro, at $20 a month each. Pick Claude for the higher pass rate on hard code and ChatGPT for cheaper, quicker runs. Whether you need both plans weighs the cost of paying for two.
